Update taiki-e/install-action digest to de2de18

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@86ec8296ca78c5cfba526854b020d4e58cf41e67 # v2
+        uses: taiki-e/install-action@de2de18dd28aa26d0ec2a35406466cd5ce3648a2 # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme