fix: Output of variable in ci/cd

.gitlab-ci.yml

@@ -87,7 +87,7 @@ test_after_vips_common_changes:
   script:
     - echo $VERSION
     - ./mvnw versions:use-dep-version -Dincludes=no.nibio.vips:VIPSCommon -DdepVersion=$VERSION -DforceVersion=true
-    - echo 'Build model with no.nibio.vips:VIPSCommon:$VERSION'
+    - echo 'Build model with no.nibio.vips:VIPSCommon:${VERSION}'
     - ./mvnw $MAVEN_CLI_OPTS $MAVEN_OPTS package
   tags:
     - vips-java