ci: Cache dependencies to speed up test runs

.github/workflows/test-and-upload-coverage.yml

@@ -110,6 +110,45 @@ jobs:
           go-version: "1.21"
           check-latest: true
 
+      - name: Set cache paths
+        id: cache-paths
+        shell: bash
+        run: |
+          echo "GO_CACHE=$(go env GOCACHE)" >> "${GITHUB_OUTPUT}"
+          echo "GO_MODCACHE=$(go env GOMODCACHE)" >> "${GITHUB_OUTPUT}"
+          echo "CARGO_CACHE=~/.cargo" >> "${GITHUB_OUTPUT}"
+
+      - name: Go cache/restore
+        uses: actions/cache@v4
+        with:
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.mod') }}
+          path: |
+            ${{ steps.cache-paths.outputs.GO_CACHE }}
+            ${{ steps.cache-paths.outputs.GO_MODCACHE }}
+
+      - name: Cargo cache/restore
+        # A very cool post: https://blog.arriven.wtf/posts/rust-ci-cache
+        uses: actions/cache@v4
+        with:
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.toml') }}
+            # Here are some directories we shouldn't forget about:
+            # ~/.cargo/.*
+            # ~/.cargo/bin/
+            # ~/.cargo/git/db/
+            # ~/.cargo/registry/cache/
+            # ~/.cargo/registry/index/
+            # **/target/*/*.d
+            # **/target/*/*.rlib
+            # **/target/*/.fingerprint
+            # **/target/*/build
+            # **/target/*/deps
+          path: |
+            ${{ steps.cache-paths.outputs.CARGO_CACHE }}
+            **/target/
+
+      - name: Restore modified time
+        uses: chetan/git-restore-mtime-action@v2
+
       - name: Build dependencies
         run: |
           make deps:modules