CI: add OSSRH_USER as configured env var

We need it now in order to deploy to OSS Sonatype.

Author: ctrueden

.github/workflows/build.yml

@@ -36,5 +36,6 @@ jobs:
           GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
           MAVEN_USER: ${{ secrets.MAVEN_USER }}
           MAVEN_PASS: ${{ secrets.MAVEN_PASS }}
+          OSSRH_USER: ${{ secrets.OSSRH_USER }}
           OSSRH_PASS: ${{ secrets.OSSRH_PASS }}
           SIGNING_ASC: ${{ secrets.SIGNING_ASC }}