Fix CI caching behaviour.

Author: emgre

.github/workflows/ci.yml

@@ -35,6 +35,10 @@ jobs:
         run: Copy-Item -Path .cargo/config-linux.toml -Destination .cargo/config.toml
       - name: Caching
         uses: Swatinem/rust-cache@v1
+      - name: Update dependencies
+        uses: actions-rs/cargo@v1
+        with:
+          command: update
       - name: Run Rust unit tests
         uses: actions-rs/cargo@v1
         with:
@@ -57,8 +61,6 @@ jobs:
           toolchain: ${{ matrix.rust }}
           override: true
           components: rustfmt, clippy
-      - name: Caching
-        uses: Swatinem/rust-cache@v1
       - name: Format
         uses: actions-rs/cargo@v1
         with:
@@ -96,6 +98,10 @@ jobs:
         run: Copy-Item -Path .cargo/config-linux.toml -Destination .cargo/config.toml
       - name: Caching
         uses: Swatinem/rust-cache@v1
+      - name: Update dependencies
+        uses: actions-rs/cargo@v1
+        with:
+          command: update
       - name: Build
         uses: actions-rs/cargo@v1
         with:
@@ -140,6 +146,10 @@ jobs:
           override: true
       - name: Caching
         uses: Swatinem/rust-cache@v1
+      - name: Update dependencies
+        uses: actions-rs/cargo@v1
+        with:
+          command: update
       - name: Download compiled FFI
         uses: actions/download-artifact@v2
         with: