Fix gpg signing issue (#8)

* Add return_url field to PostData

* Create ChapaException class to handle 4XX and 5XX response codes

* Prepare 1.2.2 release

* Prepare 1.2.2 release

* Fix broken tests

* Update README.md

* Automate publish to maven to workflow

* Fix gpg signing issues

.github/workflows/maven-publish.yml

@@ -24,8 +24,11 @@ jobs:
           server-id: ossrh
           server-username: MAVEN_USERNAME
           server-password: MAVEN_PASSWORD
+          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
+          gpg-passphrase: MAVEN_GPG_PASSPHRASE
       - name: Publish package
         run: mvn --batch-mode deploy
         env:
           MAVEN_USERNAME: ${{ secrets.OSSRH_USERNAME }}
-          MAVEN_PASSWORD: ${{ secrets.OSSRH_TOKEN }}
+          MAVEN_PASSWORD: ${{ secrets.OSSRH_TOKEN }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}