Fix circle ci config

Previously, the workflow did not run on tags. Now that the correct filter is applied
to the test job, the workflow will run for both releases and merges

.circleci/config.yml

@@ -37,7 +37,10 @@ workflows:
   version: 2
   test-and-deploy:
     jobs:
-      - test
+      - test:
+          filters:  # required since `deploy` has tag filters AND requires `build`
+            tags:
+              only: /.*/
       - shadow_jar:
           requires:
             - test

after_deploy.sh

@@ -9,6 +9,8 @@ fi
 rm -rf javadoc/* # Remove all files without hidden (.git)
 javadoc -public -splitindex -windowtitle "java-stellar-sdk documentation" -d ./javadoc -sourcepath ./src/main/java/ -subpackages org.stellar.sdk -exclude org.stellar.sdk.xdr
 cd javadoc
+git config user.name "post-release-script"
+git config user.email "post-release-script@stellar.org"
 git add .
 git commit -m $CIRCLE_TAG
 git push origin gh-pages