Bump aws-actions/configure-aws-credentials from 5 to 6 (#1870)

Bumps [aws-actions/configure-aws-credentials](https://github.com/aws-actions/configure-aws-credentials) from 5 to 6.
- [Release notes](https://github.com/aws-actions/configure-aws-credentials/releases)
- [Changelog](https://github.com/aws-actions/configure-aws-credentials/blob/main/CHANGELOG.md)
- [Commits](aws-actions/configure-aws-credentials@v5...v6)

---
updated-dependencies:
- dependency-name: aws-actions/configure-aws-credentials
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

.github/workflows/publish-snapshots.yml

@@ -30,7 +30,7 @@ jobs:
           MAVEN_SNAPSHOTS_S3_REPO: op://opensearch-infra-secrets/maven-snapshots-s3/repo
           MAVEN_SNAPSHOTS_S3_ROLE: op://opensearch-infra-secrets/maven-snapshots-s3/role
       - name: Configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v5
+        uses: aws-actions/configure-aws-credentials@v6
         with:
           role-to-assume: ${{ env.MAVEN_SNAPSHOTS_S3_ROLE }}
           aws-region: us-east-1