Revert "Use NEW_SONATYPE_USERNAME and NEW_SONATYPE_PASSWORD secrets."

This reverts commit cd229ac.

Author: aaronriekenberg

.github/workflows/gradle-publish.yml

@@ -25,7 +25,7 @@ jobs:
         with:
           arguments: -Pversion=${{ env.PUBLISH_VERSION }} publishToSonatype closeAndReleaseSonatypeStagingRepository
         env:
-          ORG_GRADLE_PROJECT_sonatypeUsername: ${{ secrets.NEW_SONATYPE_USERNAME }}
-          ORG_GRADLE_PROJECT_sonatypePassword: ${{ secrets.NEW_SONATYPE_PASSWORD }}
+          ORG_GRADLE_PROJECT_sonatypeUsername: ${{ secrets.SONATYPE_USERNAME }}
+          ORG_GRADLE_PROJECT_sonatypePassword: ${{ secrets.SONATYPE_PASSWORD }}
           ORG_GRADLE_PROJECT_signingKey: ${{ secrets.GPG_SIGNING_KEY }}
           ORG_GRADLE_PROJECT_signingPassword: ${{ secrets.GPG_SIGNING_PASSWORD }}