Fix release workflow: use cargo generate-lockfile instead of cargo check

cargo check requires system libs (gtk, webkit) which aren't installed in
the version-bump job. cargo generate-lockfile only needs to resolve deps.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ParthJadhav

.github/workflows/release.yml

@@ -52,7 +52,7 @@ jobs:
 
       - name: Update Cargo.lock
         working-directory: src-tauri
-        run: cargo check
+        run: cargo generate-lockfile
 
       - name: Commit and tag
         run: |