6.4.5-rc2 (#1264)

- Fixed out-of-memory crash when parsing link previews
- Fixed display of qr-code button when viewing own omemo keys

.github/workflows/pr-semver-title.yml

@@ -0,0 +1,23 @@
+name: Check PR title for proper semver
+
+on:
+  pull_request:
+    branches:
+      - beta
+      - stable
+
+jobs:
+  check-pr-semver-title:
+    runs-on: ubuntu-latest
+    name: Validate PR Title
+
+    steps:
+      - name: Check PR title format
+        run: |
+          version="${{ github.event.pull_request.title }}"
+          if ! [[ "$version" =~ ^(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(-((0|[1-9][0-9]*|[0-9]*[a-zA-Z-][0-9a-zA-Z-]*)(\.(0|[1-9][0-9]*|[0-9]*[a-zA-Z-][0-9a-zA-Z-]*))*))?(\+([0-9a-zA-Z-]+(\.[0-9a-zA-Z-]+)*))?$ ]]; then
+            echo "Invalid semver: '$version'!"
+            exit 1
+          fi
+          echo "Version is proper semver: $version"
+