Update taiki-e/install-action digest to 5ffe29a

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@c2262caf0bd8aeddc68e640b076bb19a50d95ee8 # v2
+        uses: taiki-e/install-action@5ffe29a8b19894ab68b6dc6f8d07142b719c3735 # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme