Update taiki-e/install-action digest to e73edba

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@f2b65a3e67b2ba5ed3b4a631b5e460896e975708 # v2
+        uses: taiki-e/install-action@e73edba6cef4fb2754007a50e0b28cf1c702c52b # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme