Set version to 0.12.0

lerna.json

package.json

...xtended-services/kogito-extended-services-quarkus/pom.xml

packages/backend-extended-services/package.json

packages/backend-extended-services/pom.xml

packages/backend/package.json

packages/build-env/graph.dot

packages/build-env/package.json

...hrome-extension-pack-kogito-kie-editors/manifest.dev.json

...rome-extension-pack-kogito-kie-editors/manifest.prod.json

...ges/chrome-extension-pack-kogito-kie-editors/package.json

packages/chrome-extension/package.json

packages/desktop/package.json

packages/dmn-dev-sandbox-deployment-base-image/package.json

packages/dmn-dev-sandbox-form-webapp/package.json

packages/dmn-json-schema-generator/package.json

packages/dmn-json-schema-generator/pom.xml

packages/editor/package.json

packages/envelope-bus/package.json

packages/envelope/package.json