Merge branch 'fix_arm_linux_build' into 'main'

fix: temporaraly force the arm64 build to use the old stable flutter version

See merge request famedly/fluffychat!513

.gitlab-ci.yml

@@ -158,7 +158,8 @@ build_linux_arm64:
   stage: coverage
   before_script:
     - flutter channel stable
-    - flutter upgrade --force
+#    - flutter upgrade --force
+    - $(cd $(which flutter | xargs dirname) && git checkout 2.2.3)
   script: [./scripts/build-linux.sh]
   tags: [docker_arm64]
   only: