Update taiki-e/install-action digest to 85b24a6 (#525)

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@d0f23220b09a75c6db730f13bb37c4f8144b4382 # v2
+        uses: taiki-e/install-action@85b24a67ef0c632dfefad70b9d5ce8fddb040754 # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme