Bump snok/container-retention-policy from 2.1.2 to 2.1.3 (#2636)

Bumps [snok/container-retention-policy](https://github.com/snok/container-retention-policy) from 2.1.2 to 2.1.3.
- [Release notes](https://github.com/snok/container-retention-policy/releases)
- [Commits](snok/container-retention-policy@04c70fd...3d27e6a)

---
updated-dependencies:
- dependency-name: snok/container-retention-policy
  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/cleanup.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Delete untagged images older than 1 week
-        uses: snok/container-retention-policy@04c70fd030033036d69c0057e0d125bf25820544 # v2.1.2
+        uses: snok/container-retention-policy@3d27e6a0361deed0b7dc5099a82eadd07924b177 # v2.1.3
         with:
           account-type: org
           org-name: ministryofjustice
@@ -23,7 +23,7 @@ jobs:
           token: ${{ secrets.BOT_GITHUB_PACKAGES_TOKEN }}
 
       - name: Delete all images older than a month that aren't currently deployed
-        uses: snok/container-retention-policy@04c70fd030033036d69c0057e0d125bf25820544 # v2.1.2
+        uses: snok/container-retention-policy@3d27e6a0361deed0b7dc5099a82eadd07924b177 # v2.1.3
         with:
           account-type: org
           org-name: ministryofjustice