faster, cheaper (pick two): improve CI workflow and switch to free github runner (#5702)

Co-authored-by: Douwe Osinga <douwe@block.xyz>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.github/workflows/bundle-desktop-linux.yml

@@ -87,17 +87,10 @@ jobs:
       - name: Install cross
         run: source ./bin/activate-hermit && cargo install cross --git https://github.com/cross-rs/cross
 
-      - name: Cache Cargo artifacts
-        uses: actions/cache@2f8e54208210a422b2efd51efaa6bd6d7ca8920f # pin@v3
+      - name: Cache Rust dependencies
+        uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2
         with:
-          path: |
-            ${{ env.CARGO_HOME }}/bin/
-            ${{ env.CARGO_HOME }}/registry/index/
-            ${{ env.CARGO_HOME }}/registry/cache/
-            ${{ env.CARGO_HOME }}/git/db/
-          key: ${{ runner.os }}-cargo-release-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-cargo-release-
+          key: linux
 
       - name: Build goosed binary
         env:
@@ -164,21 +157,21 @@ jobs:
           find ui/desktop/out/ -name "*.deb" -o -name "*.rpm" -exec ls -lh {} \;
 
       - name: Upload .deb package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           name: Goose-linux-x64-deb
           path: ui/desktop/out/make/deb/x64/*.deb
           if-no-files-found: error
 
       - name: Upload .rpm package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           name: Goose-linux-x64-rpm
           path: ui/desktop/out/make/rpm/x64/*.rpm
           if-no-files-found: error
 
       - name: Upload combined Linux packages
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           name: Goose-linux-x64
           path: |