Update taiki-e/install-action digest to e43a502 (#373)

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@0005e0116e92d8489d8d96fbff83f061c79ba95a # v2
+        uses: taiki-e/install-action@e43a5023a747770bfcb71ae048541a681714b951 # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme