Add gpg key

Author: justinabrahms

.github/workflows/pullrequest.yml

@@ -18,6 +18,11 @@ jobs:
           java-version: '8'
           distribution: 'temurin'
           cache: maven
+      - name: Configure GPG Key
+        run: |
+          echo -n "$GPG_SIGNING_KEY" | base64 --decode | gpg --import
+        env:
+          GPG_SIGNING_KEY: ${{ secrets.GPG_SIGNING_KEY }}
 
       - name: Build with Maven
         run: mvn --batch-mode --update-snapshots verify