Update taiki-e/install-action digest to 067268f (#253)

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@9903ab6feadaec33945de535fe9d181b91802a55 # v2
+        uses: taiki-e/install-action@067268f3aa4f1f3c2becf69d7454955cfab17334 # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme