[Backport 2.x] Bump com.google.api:gax from 2.17.0 to 2.27.0 in /plugins/repository-gcs

[cwperks]

Backport #7697 to 2.x

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/16114/
• CommitID: 55b8ab3
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/16111/
• CommitID: 98a3e56
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.client.PitIT.testDeleteAllAndListAllPits

• URL: https://build.ci.opensearch.org/job/gradle-check/16112/
• CommitID: 027585a
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Merging #7707 (a89ffe0) into 2.x (f61d354) will increase coverage by 0.36%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                2.x    #7707      +/-   ##
============================================
+ Coverage     70.36%   70.73%   +0.36%     
- Complexity    60151    60491     +340     
============================================
  Files          4899     4899              
  Lines        289129   289129              
  Branches      41991    41991              
============================================
+ Hits         203459   204509    +1050     
+ Misses        68642    67863     -779     
+ Partials      17028    16757     -271     

see 470 files with indirect coverage changes

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.index.remote.RemoteRefreshSegmentPressureServiceTests.testValidateSegmentUploadLag

• URL: https://build.ci.opensearch.org/job/gradle-check/16121/
• CommitID: a89ffe0
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/16129/
• CommitID: a89ffe0