Update taiki-e/install-action digest to 763e332 (#398)

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@f79fe7514db78f0a7bdba3cb6dd9c1baa7d046d9 # v2
+        uses: taiki-e/install-action@763e3324d4fd026c9bd284c504378585777a87d5 # v2
         with:
           tool: cargo-readme
       - name: Run cargo readme