gateway: bump azure/setup-helm from 4.3.1 to 5.0.0 (#576)

Bumps [azure/setup-helm](https://github.com/azure/setup-helm) from 4.3.1 to 5.0.0.
- [Release notes](https://github.com/azure/setup-helm/releases)
- [Changelog](https://github.com/Azure/setup-helm/blob/main/CHANGELOG.md)
- [Commits](Azure/setup-helm@1a275c3...dda3372)

---
updated-dependencies:
- dependency-name: azure/setup-helm
  dependency-version: 5.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/dummy.yml

@@ -64,7 +64,7 @@ jobs:
         if: false
       - uses: aws-actions/configure-aws-credentials@8df5847569e6427dd6c4fb1cf565c83acfa8afa7  # v6.0.0
         if: false
-      - uses: azure/setup-helm@1a275c3b69536ee54be43f2070a358922e12c8d4  # v4.3.1
+      - uses: azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2  # v5.0.0
         if: false
       - uses: azure/setup-kubectl@15650b3ad78fff148532a140b8a4c821796b2d7b  # v5.0.0
         if: false