ci: Fix bindgen cache key to include runner architecture

Author: Darksonn

.github/workflows/ci.yml

@@ -62,7 +62,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ~/.cargo/bin/bindgen
-        key: bindgen-${{ runner.os }}-${{ env.BINDGEN_VERSION }}
+        key: bindgen-${{ runner.os }}-${{ runner.arch }}-${{ env.BINDGEN_VERSION }}
     - name: Install bindgen
       if: steps.cache-bindgen.outputs.cache-hit != 'true'
       run: cargo install bindgen-cli --version ${{ env.BINDGEN_VERSION }}