ci: Allow failure of aarch64 jobs

There are issues currently with the only flatpak-arch64 CI runner that
prevents us from merging anything.

This means that the nightly aarch64 Flatpak will not be updated as long
as the problem is not fixed.

.gitlab-ci/build.yml

@@ -25,6 +25,7 @@ build@aarch64:
   extends:
     - .flatpak@aarch64
   stage: build
+  allow_failure: true
 
 # Test builds with the stable runtime to make sure that the Flatpak will build on Flathub.
 # Should be run manually before tagging a new release.
@@ -44,7 +45,7 @@ build@aarch64:
     - sed -i "s|master|${GNOME_STABLE_VERSION}|g" ${MANIFEST_PATH}
     # We want to use the latest LLVM extension for the stable runtime.
     - sed -i "s|llvm${LLVM_NIGHTLY_VERSION}|llvm${LLVM_STABLE_VERSION}|g" ${MANIFEST_PATH}
-    
+
 
 build-stable@x86_64:
   extends:

.gitlab-ci/publish_nightly.yml

@@ -9,3 +9,4 @@ publish_nightly@x86_64:
 publish_nightly@aarch64:
   extends: .publish_nightly
   needs: ['build@aarch64']
+  allow_failure: true