chore(deps): bump taiki-e/install-action from 2.79.7 to 2.81.2 (#195)

Bumps [taiki-e/install-action](https://github.com/taiki-e/install-action) from 2.79.7 to 2.81.2.
- [Release notes](https://github.com/taiki-e/install-action/releases)
- [Changelog](https://github.com/taiki-e/install-action/blob/main/CHANGELOG.md)
- [Commits](taiki-e/install-action@d9be7d8...6887963)

---
updated-dependencies:
- dependency-name: taiki-e/install-action
  dependency-version: 2.81.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -53,7 +53,7 @@ jobs:
         run: cargo +nightly doc -p agent-client-protocol --all-features --no-deps
 
       - name: Install just
-        uses: taiki-e/install-action@d9be7d8cda89035c9c843f78bd44d4f72d8403d4
+        uses: taiki-e/install-action@6887963ccf37a9ddcd8c5fa4baeb3e1e5fd61fa1
         with:
           tool: just
 
@@ -96,7 +96,7 @@ jobs:
           toolchain: stable
 
       - name: Install cargo-hack
-        uses: taiki-e/install-action@d9be7d8cda89035c9c843f78bd44d4f72d8403d4
+        uses: taiki-e/install-action@6887963ccf37a9ddcd8c5fa4baeb3e1e5fd61fa1
         with:
           tool: cargo-hack
 

.github/workflows/mdbook.yml

@@ -34,7 +34,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Install mdBook
-        uses: taiki-e/install-action@d9be7d8cda89035c9c843f78bd44d4f72d8403d4
+        uses: taiki-e/install-action@6887963ccf37a9ddcd8c5fa4baeb3e1e5fd61fa1
         with:
           tool: mdbook,mdbook-mermaid