Bump protobuf from 4.21.12 to 4.22.0 in /tests (#3569)

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 4.21.12 to 4.22.0.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](https://github.com/protocolbuffers/protobuf/commits/v4.22.0)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

tests/requirements.txt

@@ -279,21 +279,20 @@ pluggy==1.0.0 \
     # via
     #   -r requirements.txt
     #   pytest
-protobuf==4.21.12 \
-    --hash=sha256:1f22ac0ca65bb70a876060d96d914dae09ac98d114294f77584b0d2644fa9c30 \
-    --hash=sha256:237216c3326d46808a9f7c26fd1bd4b20015fb6867dc5d263a493ef9a539293b \
-    --hash=sha256:27f4d15021da6d2b706ddc3860fac0a5ddaba34ab679dc182b60a8bb4e1121cc \
-    --hash=sha256:299ea899484ee6f44604deb71f424234f654606b983cb496ea2a53e3c63ab791 \
-    --hash=sha256:3d164928ff0727d97022957c2b849250ca0e64777ee31efd7d6de2e07c494717 \
-    --hash=sha256:6ab80df09e3208f742c98443b6166bcb70d65f52cfeb67357d52032ea1ae9bec \
-    --hash=sha256:78a28c9fa223998472886c77042e9b9afb6fe4242bd2a2a5aced88e3f4422aa7 \
-    --hash=sha256:7cd532c4566d0e6feafecc1059d04c7915aec8e182d1cf7adee8b24ef1e2e6ab \
-    --hash=sha256:89f9149e4a0169cddfc44c74f230d7743002e3aa0b9472d8c28f0388102fc4c2 \
-    --hash=sha256:a53fd3f03e578553623272dc46ac2f189de23862e68565e83dde203d41b76fc5 \
-    --hash=sha256:b135410244ebe777db80298297a97fbb4c862c881b4403b71bac9d4107d61fd1 \
-    --hash=sha256:b98d0148f84e3a3c569e19f52103ca1feacdac0d2df8d6533cf983d1fda28462 \
-    --hash=sha256:d1736130bce8cf131ac7957fa26880ca19227d4ad68b4888b3be0dea1f95df97 \
-    --hash=sha256:f45460f9ee70a0ec1b6694c6e4e348ad2019275680bd68a1d9314b8c7e01e574
+protobuf==4.22.0 \
+    --hash=sha256:1669cb7524221a8e2d9008d0842453dbefdd0fcdd64d67672f657244867635fb \
+    --hash=sha256:29288813aacaa302afa2381db1d6e0482165737b0afdf2811df5fa99185c457b \
+    --hash=sha256:47d31bdf58222dd296976aa1646c68c6ee80b96d22e0a3c336c9174e253fd35e \
+    --hash=sha256:652d8dfece122a24d98eebfef30e31e455d300efa41999d1182e015984ac5930 \
+    --hash=sha256:7c535d126e7dcc714105ab20b418c4fedbd28f8b8afc42b7350b1e317bbbcc71 \
+    --hash=sha256:86c3d20428b007537ba6792b475c0853bba7f66b1f60e610d913b77d94b486e4 \
+    --hash=sha256:a33a273d21852f911b8bda47f39f4383fe7c061eb1814db2c76c9875c89c2491 \
+    --hash=sha256:ab4d043865dd04e6b09386981fe8f80b39a1e46139fb4a3c206229d6b9f36ff6 \
+    --hash=sha256:b2fea9dc8e3c0f32c38124790ef16cba2ee0628fe2022a52e435e1117bfef9b1 \
+    --hash=sha256:c27f371f0159feb70e6ea52ed7e768b3f3a4c5676c1900a7e51a24740381650e \
+    --hash=sha256:c3325803095fb4c2a48649c321d2fbde59f8fbfcb9bfc7a86df27d112831c571 \
+    --hash=sha256:e474b63bab0a2ea32a7b26a4d8eec59e33e709321e5e16fb66e766b61b82a95e \
+    --hash=sha256:e894e9ae603e963f0842498c4cd5d39c6a60f0d7e4c103df50ee939564298658
     # via
     #   -r requirements.txt
     #   grpcio-tools