Attempt to speed up rust ffi building again

.github/workflows/tests.yaml

@@ -27,10 +27,10 @@ jobs:
           cache-dependency-path: "js-sdk/yarn.lock"
       - name: Setup | Go
         uses: actions/setup-go@v4
-      - name: Setup | Rust stable
-        uses: ATiltedTree/setup-rust@v1
+      - name: Setup | Rust
+        uses: dtolnay/rust-toolchain@stable
         with:
-          rust-version: stable
+          toolchain: stable
       - name: "Install Complement Dependencies"
         run: |
           sudo apt-get update && sudo apt-get install -y libolm3 libolm-dev
@@ -43,10 +43,18 @@ jobs:
           (cd js-sdk && yarn install --frozen-lockfile && yarn build)
           cp -r ./js-sdk/dist/. ./internal/api/dist
 
-      - run: rustup toolchain install stable --profile minimal
-      - uses: Swatinem/rust-cache@v2
+      - name: Set up cargo cache
+        uses: actions/cache@v3
+        continue-on-error: false
         with:
-          cache-all-crates: "true"
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/            
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: ${{ runner.os }}-cargo-
       - name: Build Rust FFI bindings
         run: |
           mkdir rust-sdk