Update dependency flameshot-org/flameshot to v12

Author: renovate-bot

Dockerfile

@@ -4,7 +4,7 @@ LABEL maintainer="@ManuelLR <[email protected]>"
 
 ENV GIT_URL https://github.com/flameshot-org/flameshot.git
  # renovatebot: datasource=github-releases depName=flameshot-org/flameshot
-ENV GIT_BRANCH v11.0.0
+ENV GIT_BRANCH v12.0.0
 
 ENV BUILD_PACKAGES git g++ cmake build-essential qtbase5-dev qttools5-dev-tools libqt5svg5-dev qttools5-dev ca-certificates
 ENV RUNTIME_PACKAGES libqt5dbus5 libqt5network5 libqt5core5a libqt5widgets5 libqt5gui5 libqt5svg5 openssl ca-certificates