Fix CI: Add missing gstreamer-plugins-bad-dev package

The build was failing with:
  error: failed to run custom build command for gstreamer-webrtc-sys
  The system library gstreamer-webrtc-1.0 required by crate
  gstreamer-webrtc-sys was not found.

Added libgstreamer-plugins-bad1.0-dev to provide the WebRTC
development headers and pkg-config file.

Also bumped cache version to 1.1 to invalidate old package cache.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Per Enstedt

.github/workflows/ci.yml

@@ -47,8 +47,8 @@ jobs:
       - name: Cache apt packages
         uses: awalsh128/cache-apt-pkgs-action@v1
         with:
-          packages: libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-tools
-          version: 1.0
+          packages: libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-tools
+          version: 1.1
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -95,8 +95,8 @@ jobs:
       - name: Cache apt packages
         uses: awalsh128/cache-apt-pkgs-action@v1
         with:
-          packages: libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-tools
-          version: 1.0
+          packages: libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-tools
+          version: 1.1
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -124,8 +124,8 @@ jobs:
       - name: Cache apt packages
         uses: awalsh128/cache-apt-pkgs-action@v1
         with:
-          packages: libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-tools
-          version: 1.0
+          packages: libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-tools
+          version: 1.1
 
       - name: Cache trunk binary
         id: cache-trunk