Update taiki-e/install-action digest to 941e8a4 (#263)

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@13608a19a2204ea4cc0b5888e995ab288684b613 # v2
+        uses: taiki-e/install-action@941e8a4d9d7cdb696bd4f017cf54aca281f8ffff # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme