Revert checkout to v5 to try and get release to work.

Author: nedtwigg

.github/workflows/deploy.yml

@@ -37,7 +37,7 @@ jobs:
       ORG_GRADLE_PROJECT_gpg_passphrase: ${{ secrets.GPG_PASSPHRASE }}
       ORG_GRADLE_PROJECT_gpg_key64: ${{ secrets.GPG_KEY64 }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v5
       - uses: actions/setup-java@v5
         with:
           java-version: 21