Use taiki-e/install-action for installing some tools in CI

.github/workflows/coverage.yaml

@@ -141,11 +141,10 @@ jobs:
       - name: Setup sccache
         uses: mozilla-actions/sccache-action@v0.0.7
 
-      - name: Download grcov
-        run: |
-          mkdir -p "${HOME}/.local/bin"
-          curl -sL https://github.com/mozilla/grcov/releases/download/v0.8.19/grcov-x86_64-unknown-linux-gnu.tar.bz2 | tar jxf - -C "${HOME}/.local/bin"
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
+      - name: Install grcov
+        uses: taiki-e/install-action@v2
+        with:
+          tool: grcov
 
       - name: Run test suite with profiling enabled
         run: |