Update taiki-e/install-action digest to f0dfbb6 (#316)

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@4351b0c7eac445cb6f5a730526fcaef1473d3ea6 # v2
+        uses: taiki-e/install-action@f0dfbb6a9af5958db1a40c08b3bc0c8755da46bb # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme