Update taiki-e/install-action digest to 51b8ba0 (#5840)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [taiki-e/install-action](https://togithub.com/taiki-e/install-action)
| action | digest | [`7491b90` ->
`51b8ba0`](https://togithub.com/taiki-e/install-action/compare/7491b90...51b8ba0)
|

---

### 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

---

This PR has been generated by [Renovate
Bot](https://togithub.com/renovatebot/renovate).

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Co-authored-by: oxide-renovate[bot] <146848827+oxide-renovate[bot]@users.noreply.github.com>

.github/workflows/hakari.yml

@@ -24,7 +24,7 @@ jobs:
         with:
           toolchain: stable
       - name: Install cargo-hakari
-        uses: taiki-e/install-action@7491b900536dd0dae2e47ce7c17f140e46328dc4 # v2
+        uses: taiki-e/install-action@51b8ba088c63d8750c618764ff2030742da0ec19 # v2
         with:
           tool: cargo-hakari
       - name: Check workspace-hack Cargo.toml is up-to-date