Update CI snapshot.yml

Author: ebocher

.github/workflows/CI snapshot.yml

@@ -46,4 +46,4 @@ jobs:
         env:
           MAVEN_USERNAME: ${{ secrets.MVN_CENTRAL_USERNAME }}
           MAVEN_PASSWORD: ${{ secrets.MVN_CENTRAL_PASSWORD }}
-          MAVEN_GPG_PASSPHRASE: ${{ secrets.MAVEN_GPG_PASSPHRASE }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}