Update taiki-e/install-action digest to 94cb46f (#517)

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@7a562dfa955aa2e4d5b0fd6ebd57ff9715c07b0b # v2
+        uses: taiki-e/install-action@94cb46f8d6e437890146ffbd78a778b78e623fb2 # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme