Fix Maven Central publish signing in release workflow (#4)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

Author: Copilot

.github/workflows/release.yml

@@ -66,4 +66,4 @@ jobs:
         env:
           CENTRAL_TOKEN_USERNAME: ${{ secrets.CENTRAL_TOKEN_USERNAME }}
           CENTRAL_TOKEN_PASSWORD: ${{ secrets.CENTRAL_TOKEN_PASSWORD }}
-          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}

pom.xml

@@ -197,6 +197,12 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-gpg-plugin</artifactId>
         <version>3.2.7</version>
+        <configuration>
+          <gpgArguments>
+            <arg>--pinentry-mode</arg>
+            <arg>loopback</arg>
+          </gpgArguments>
+        </configuration>
         <executions>
           <execution>
             <id>sign-artifacts</id>