Update Dependabot fetch-metadata and auto-approve-action versions

Author: Thomas-Boyle

.github/workflows/dependabot-auto-approve.yml

@@ -14,10 +14,10 @@ jobs:
     steps:
       - name: Fetch Dependabot metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v2
+        uses: dependabot/fetch-metadata@21025c705c08248db411dc16f3619e6b5f9ea21a
 
       - name: Auto-approve minor and patch updates
         if: contains(fromJSON('["version-update:semver-minor", "version-update:semver-patch"]'), steps.metadata.outputs.update-type)
-        uses: hmarr/auto-approve-action@v4
+        uses: hmarr/auto-approve-action@f0939ea97e9205ef24d872e76833fa908a770363
         with:
           github-token: ${{ github.token }}