Fix serde API publishing

Author: Haarolean

.github/workflows/release-serde-api.yml

@@ -34,8 +34,4 @@ jobs:
       - name: Publish to Maven Central
         # TODO fix me next publish, I'm broken :(
         run: |
-          mvn source:jar javadoc:jar package gpg:sign \
-          -Dgpg.passphrase=${{ secrets.GPG_PASSPHRASE }} \
-          -Dserver.username=${{ secrets.NEXUS_USERNAME }} \
-          -Dserver.password=${{ secrets.NEXUS_PASSWORD }} \
-          central-publishing:publish -pl serde-api -s settings.xml
+          ./gradlew :serde-api:publish

serde-api/build.gradle

@@ -25,6 +25,10 @@ artifacts {
 
 if (release) {
     signing {
+        useInMemoryPgpKeys(
+                System.getenv("GPG_PRIVATE_KEY"),
+                System.getenv("GPG_PASSPHRASE")
+        )
         sign(publishing.publications)
     }
 }