CI: rename env vars for Central credentials

This switches from OSSRH to Central Portal Publishing.

See:
* https://central.sonatype.org/pages/ossrh-eol/
* https://central.sonatype.org/publish/publish-portal-maven/

Author: ctrueden

.github/workflows/build.yml

@@ -42,8 +42,8 @@ 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 }}
+          CENTRAL_USER: ${{ secrets.CENTRAL_USER }}
+          CENTRAL_PASS: ${{ secrets.CENTRAL_PASS }}
           SIGNING_ASC: ${{ secrets.SIGNING_ASC }}
 
       - name: Delete the melting-pot cache

.github/workflows/release.yml

@@ -30,6 +30,6 @@ 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 }}
+          CENTRAL_USER: ${{ secrets.CENTRAL_USER }}
+          CENTRAL_PASS: ${{ secrets.CENTRAL_PASS }}
           SIGNING_ASC: ${{ secrets.SIGNING_ASC }}