GH-1031 - Consume GPG passphrase from environment.

Author: odrotbohm

.github/workflows/release.yaml

@@ -30,7 +30,7 @@ jobs:
       env:
           SONATYPE_USER: ${{ secrets.OSSRH_S01_TOKEN_USERNAME }}
           SONATYPE_PASSWORD: ${{ secrets.OSSRH_S01_TOKEN_PASSWORD }}
-          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
           DEVELOCITY_ACCESS_KEY: ${{ secrets.GRADLE_ENTERPRISE_SECRET_ACCESS_KEY }}
       run: |
         ./mvnw -B clean install -DskipTests

pom.xml

@@ -219,7 +219,7 @@ limitations under the License.
 							</execution>
 						</executions>
 						<configuration>
-							<passphrase>${env.GPG_PASSPHRASE}</passphrase>
+							<!-- Passphrase consumed from MAVEN_GPG_PASSPHRASE environment variable. -->
 						</configuration>
 					</plugin>
 					<plugin>