Update taiki-e/install-action digest to 522492a (#363)

Author: nextest-bot

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Lint (rustfmt)
         run: cargo xfmt --check
       - name: Install cargo readme
-        uses: taiki-e/install-action@f355b1dcaf1a1c56ccead97cc540a259faf4bd5a # v2
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme