fix: make iOS build non-blocking (requires Apple Developer certificate)

iOS builds require Apple Developer signing credentials even for unsigned
builds. Made job non-blocking so releases complete for other platforms.

Author: moralpriest

.github/workflows/release.yml

@@ -389,6 +389,7 @@ jobs:
     runs-on: macos-latest
     needs: verify
     timeout-minutes: 30
+    continue-on-error: true
     permissions:
       contents: read
     steps: