[CHANGE ME] Re-generated Bigtable to pick up changes in the API or client library generator.

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Commits in this repo since last synth:
f60e159 revert: revert "refactor: update spanner lroResponseMappers to map types for metadata and response separately" (#2585)
3425da1 refactor: update spanner lroMappers to map types for metadata and response separately (#2537)
3bf8b7b chore: release 0.123.0 (#2569)
75b94bc feat: add Secret Manager (#2583)
79e9dc7 fix: update rest transport URI bindings (#2527)
39035fe feat: introduce secret manager client (#2582)
0e6da4d fix: update metadata (#2543)
6ad24c1 fix: update metadata and documentation (#2574)
c18cc32 feat: update v1pv1beta1 timeouts (#2576)
2fa7fd8 feat: update SecurityCenter client (#2567)
ff460df chore: update synth replacements to fix copyright dates (#2570)
fe62c50 feat: add external protection level, update documentation (#2538)

Log from Synthtool

synthtool > Executing /tmpfs/src/git/autosynth/working_repo/Bigtable/synth.py.
synthtool > Ensuring dependencies.
synthtool > Pulling artman image.
latest: Pulling from googleapis/artman
Digest: sha256:5599b61e56a372d21b671969ee915fbca0f6c3a0daaeb898d01f8f685f1bbc8b
Status: Image is up to date for googleapis/artman:latest
synthtool > Cloning googleapis.
synthtool > Running generator for google/bigtable/artman_bigtable.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/php/google-cloud-bigtable-v2.
synthtool > No files in sources /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/php/google-cloud-bigtable-v2/proto/src/Google/Cloud/BigTable were copied. Does the source contain files?
synthtool > Running generator for google/bigtable/admin/artman_bigtableadmin.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/php/google-cloud-bigtable-admin-v2.
synthtool > Replaced "'serviceAddress' =>" in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced "'serviceAddress' =>" in src/Admin/V2/Gapic/BigtableTableAdminGapicClient.php.
synthtool > Replaced "'serviceAddress' =>" in src/V2/Gapic/BigtableGapicClient.php.
synthtool > Replaced '@type string \\$serviceAddress\\n\\s+\\*\\s+The address' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced '@type string \\$serviceAddress\\n\\s+\\*\\s+The address' in src/Admin/V2/Gapic/BigtableTableAdminGapicClient.php.
synthtool > Replaced '@type string \\$serviceAddress\\n\\s+\\*\\s+The address' in src/V2/Gapic/BigtableGapicClient.php.
synthtool > Replaced '\\$transportConfig, and any \\$serviceAddress' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced '\\$transportConfig, and any \\$serviceAddress' in src/Admin/V2/Gapic/BigtableTableAdminGapicClient.php.
synthtool > Replaced '\\$transportConfig, and any \\$serviceAddress' in src/V2/Gapic/BigtableGapicClient.php.
synthtool > No replacements made in ['src/Admin/**/*.php', 'src/V*/**/*.php'] for pattern final class, maybe replacement is not longer needed?
synthtool > No replacements made in ['src/Admin/**/*.php', 'src/V*/**/*.php'] for pattern public function ([s|g]\w{3,})Unwrapped, maybe replacement is not longer needed?
synthtool > Replaced 'Copyright \\d{4}' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced 'Copyright \\d{4}' in src/Admin/V2/Gapic/BigtableTableAdminGapicClient.php.
synthtool > Replaced 'Copyright \\d{4}' in src/V2/Gapic/BigtableGapicClient.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/Unit/V2/BigtableClientTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/Unit/Admin/V2/BigtableInstanceAdminClientTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/Unit/Admin/V2/BigtableTableAdminClientTest.php.
synthtool > Replaced 'namespace Google\\\\Cloud\\\\Bigtable\\\\Admin\\\\Tests\\\\Unit' in tests/Unit/Admin/V2/BigtableInstanceAdminClientTest.php.
synthtool > Replaced 'namespace Google\\\\Cloud\\\\Bigtable\\\\Admin\\\\Tests\\\\Unit' in tests/Unit/Admin/V2/BigtableTableAdminClientTest.php.
synthtool > Replaced '@group admin' in tests/Unit/Admin/V2/BigtableInstanceAdminClientTest.php.
synthtool > Replaced '@group admin' in tests/Unit/Admin/V2/BigtableTableAdminClientTest.php.
synthtool > Replaced 'new BigtableClient' in src/V2/Gapic/BigtableGapicClient.php.
synthtool > Replaced 'new BigtableInstanceAdminClient' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced '\\$instance = new Instance' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced '= Type::' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced 'new FieldMask' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced '\\$cluster = new Cluster' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced 'new AppProfile' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced 'new Policy' in src/Admin/V2/Gapic/BigtableInstanceAdminGapicClient.php.
synthtool > Replaced 'new Policy' in src/Admin/V2/Gapic/BigtableTableAdminGapicClient.php.
synthtool > Replaced 'new BigtableTableAdminClient' in src/Admin/V2/Gapic/BigtableTableAdminGapicClient.php.
synthtool > Replaced 'new Table' in src/Admin/V2/Gapic/BigtableTableAdminGapicClient.php.
synthtool > Wrote metadata to synth.metadata.