Bump the actions group with 2 updates

Bumps the actions group with 2 updates: [taiki-e/install-action](https://github.com/taiki-e/install-action) and [cachix/install-nix-action](https://github.com/cachix/install-nix-action).


Updates `taiki-e/install-action` from 2.75.18 to 2.75.23
- [Release notes](https://github.com/taiki-e/install-action/releases)
- [Changelog](https://github.com/taiki-e/install-action/blob/main/CHANGELOG.md)
- [Commits](055f5df8c3...481c34c1cf)

Updates `cachix/install-nix-action` from 31.10.4 to 31.10.5
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Changelog](https://github.com/cachix/install-nix-action/blob/master/RELEASE.md)
- [Commits](616559265b...ab739621df)

---
updated-dependencies:
- dependency-name: taiki-e/install-action
  dependency-version: 2.75.23
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions
- dependency-name: cachix/install-nix-action
  dependency-version: 31.10.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/coverage.yml

@@ -25,7 +25,7 @@ jobs:
 
       - run: rustup toolchain install stable --profile minimal --component llvm-tools-preview --no-self-update
 
-      - uses: taiki-e/install-action@055f5df8c3f65ea01cd41e9dc855becd88953486 # v2.75.18
+      - uses: taiki-e/install-action@481c34c1cf3a84c68b5e46f4eccfc82af798415a # v2.75.23
         with:
           tool: cargo-llvm-cov
 

.github/workflows/nix.yml

@@ -20,7 +20,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: cachix/install-nix-action@616559265b40713947b9c190a8ff4b507b5df49b # v31.10.4
+      - uses: cachix/install-nix-action@ab739621df7a23f52766f9ccc97f38da6b7af14f # v31.10.5
 
       - uses: ./
         with: