Bump step-security/close-milestone from 2.1.0 to 2.1.1 (#10344)

Bumps [step-security/close-milestone](https://github.com/step-security/close-milestone) from 2.1.0 to 2.1.1.
- [Release notes](https://github.com/step-security/close-milestone/releases)
- [Commits](step-security/close-milestone@2ec61fc...ca235f0)

---
updated-dependencies:
- dependency-name: step-security/close-milestone
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/release-automation.yml

@@ -105,7 +105,7 @@ jobs:
       - name: Close the Milestone
         if: ${{ steps.version_parser.outputs.prerelease == '' }}
         id: milestone
-        uses: step-security/close-milestone@2ec61fc36f20d36256b3652d302aa89fd4ca2abf # v2.1.0
+        uses: step-security/close-milestone@ca235f00d0aac66e5c6543a1d4d7f88b3072e4a0 # v2.1.1
         with:
           milestone_name: ${{ steps.version_parser.outputs.release }}
         env: