Update Github Action for backport

[sorenlouv]

Related #122119

• The Backport Github Action was updated in Bump backport to 6.1.3 kibana-github-actions#15 where the manual_backport_command_template option was removed (replaced by backportBinary)
• Bump Backport to 6.1.3

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 7921531
• Storybooks Preview

Metrics [docs]

✅ unchanged

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[kibanamachine]

💔 Backport failed

The pull request could not be backported due to the following error:
There are no branches to backport to. Aborting.

How to fix

Re-run the backport manually:

node scripts/backport --pr 122479

Questions ?

Please refer to the Backport tool documentation

[kibanamachine]

💔 Some backports could not be created

Status	Branch	Result
❌	8.0	Backport failed because of merge conflicts
❌	7.16	Backport failed because of merge conflicts You might need to backport the following PRs to 7.16: - chore(NA): adds 7.16 into backportrc

How to fix

Re-run the backport manually:

node scripts/backport --pr 122479

Questions ?

Please refer to the Backport tool documentation

[sorenlouv]

💔 Some backports could not be created

Status	Branch	Result
❌	7.16	variables is not defined

How to fix

Re-run the backport manually:

node scripts/backport --pr 122479

Questions ?

Please refer to the Backport tool documentation

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create backports run node scripts/backport --pr 122479 or prevent reminders by adding the backport:skip label.

[kibanamachine]

💔 All backports failed

Status	Branch	Result
❌	7.16	Backport failed because of merge conflicts

How to fix

Re-run the backport manually:

node scripts/backport --pr 122479

Questions ?

Please refer to the Backport tool documentation