try？

Author: yuzelin

.github/workflows/create-source-release.yml

@@ -29,6 +29,9 @@ jobs:
       - name: Setup GPG
         run: |
           mkdir -p ~/.gnupg
+          chmod 700 ~/.gnupg
+          echo "HERE"
+          echo "${{ secrets.GPG_PRIVATE_KEY }}"
           echo "${{ secrets.GPG_PRIVATE_KEY }}" | gpg --batch --import --yes
           echo "use-agent" >> ~/.gnupg/gpg.conf
           echo "pinentry-program /usr/bin/pinentry" >> ~/.gnupg/gpg-agent.conf