ci: Install cargo-rdme with taiki-e/install-action

Much better than compiling from source (even with caching)

Author: Techcable

.github/workflows/test.yml

@@ -153,22 +153,11 @@ jobs:
       - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@stable
         with:
+          # required by cargo-rdme
           components: rust-src
-      # need to cache cargo-rdme to avoid redundant install
-      - name: Cache Binaries
-        id: cache-binaries
-        uses: actions/cache@v4
+      - uses: taiki-e/install-action@v2
         with:
-          path:
-            ~/.cargo/bin/cargo-rdme
-          key: ${{ runner.os }}-binary-cargo-rdme
-      - name: Install cargo-rdme
-        shell: bash
-        # NOTE: This doesn't worry about installing updates
-        run: |
-          if test ! -f "$HOME/.cargo/bin/cargo-rdme"; then
-            cargo install cargo-rdme
-          fi
+          tool: cargo-rdme
       - name: Run cargo-rdme
         run: |
           cargo rdme --check