chore(deps): bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/discord_announcement.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Fetch changelog
         id: changelog
         run: |

.github/workflows/plugin_ci.yml

@@ -38,21 +38,21 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ inputs.spellcheck && !inputs.is_production }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: crate-ci/typos@master
   commit_msg:
     name: Conventional Commit Messages
     runs-on: ubuntu-latest
     if: ${{ inputs.commit_msg && !inputs.is_production }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: webiny/action-conventional-commits@v1.3.0
   style:
     name: Stylua Formatting
     runs-on: ubuntu-latest
     if: ${{ inputs.plugin_name != '' }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: JohnnyMorganz/stylua-action@v4
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -63,7 +63,7 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ inputs.plugin_name != '' }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: NTBBloodbath/selene-action@v1.0.0
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -76,7 +76,7 @@ jobs:
       - lint
     if: ${{ inputs.plugin_name != '' && inputs.docs }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           token: ${{ secrets.RELEASE_TOKEN != null && secrets.RELEASE_TOKEN || secrets.GITHUB_TOKEN }}
       - name: Install Lua Language Server
@@ -132,7 +132,7 @@ jobs:
         with:
           token: ${{ secrets.RELEASE_TOKEN }}
           release-type: simple
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: rickstaa/action-create-tag@v1
         if: ${{ steps.release.outputs.release_created }}
         with: