chore(deps): update gradle/wrapper-validation-action digest to 1ff5a18 (#1221)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| gradle/wrapper-validation-action | action | digest | `342dbeb` ->
`1ff5a18` |

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **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 [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://developer.mend.io/github/line/line-bot-sdk-java).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4xNTMuMiIsInVwZGF0ZWRJblZlciI6IjM3LjE1My4yIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIn0=-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/publish.yml

@@ -19,7 +19,7 @@ jobs:
           distribution: 'temurin'
 
       - name: Validate Gradle wrapper
-        uses: gradle/wrapper-validation-action@342dbebe7272035434f9baccc29a816ec6dd2c7b
+        uses: gradle/wrapper-validation-action@1ff5a18cc396177ebd27c4250f7132e72af93462
 
       - name: Show Version Number
         id: version