Update taiki-e/install-action digest to c6d88ff (#111)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[taiki-e/install-action](https://redirect.github.com/taiki-e/install-action)
| action | digest | [`1fd1160` ->
`c6d88ff`](https://redirect.github.com/taiki-e/install-action/compare/1fd1160...c6d88ff)
|

---

### Configuration

📅 **Schedule**: Branch creation - "after 8pm,before 6am" in timezone
America/Los_Angeles, Automerge - "after 8pm,before 6am" in timezone
America/Los_Angeles.

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

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.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
       - name: Install cargo release
-        uses: taiki-e/install-action@1fd1160ee1f4387ce162a5a4f9c26ea274278b7f # v2
+        uses: taiki-e/install-action@c6d88ff920e4bf8eba13a133da5f45ab2ab88890 # v2
         with:
           tool: [email protected],just
       - uses: taiki-e/create-gh-release-action@26b80501670402f1999aff4b934e1574ef2d3705 # v1