chore(deps): update actions/checkout action to v6 (#1698)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://redirect.github.com/actions/checkout) |
action | major | `v5` -> `v6` |
| [actions/checkout](https://redirect.github.com/actions/checkout) |
action | major | `v5.0.1` -> `v6.0.0` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Release Notes

<details>
<summary>actions/checkout (actions/checkout)</summary>

### [`v6`](https://redirect.github.com/actions/checkout/compare/v5...v6)

[Compare
Source](https://redirect.github.com/actions/checkout/compare/v5...v6)

</details>

---

### Configuration

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rebase/retry checkbox.

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updates again.

---

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---

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.github/workflows/acceptance-tests.yml

@@ -12,7 +12,7 @@ jobs:
       - name: Check out
         with:
           persist-credentials: false
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
       - uses: jdx/mise-action@9dc7d5dd454262207dea3ab5a06a3df6afc8ff26 # v3.4.1
         with:
           version: v2025.11.5

.github/workflows/build.yml

@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
         with:
           persist-credentials: false
       - uses: jdx/mise-action@9dc7d5dd454262207dea3ab5a06a3df6afc8ff26 # v3.4.1

.github/workflows/github-pages.yaml

@@ -32,7 +32,7 @@ jobs:
     if: github.repository == 'prometheus/client_java'
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
         with:
           persist-credentials: false
           fetch-tags: "true"

.github/workflows/lint-rest.yml

@@ -12,7 +12,7 @@ jobs:
       - name: Check out
         with:
           persist-credentials: false
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - uses: jdx/mise-action@9dc7d5dd454262207dea3ab5a06a3df6afc8ff26 # v3.4.1
         with:
           version: v2025.11.5

.github/workflows/native-tests.yml

@@ -12,7 +12,7 @@ jobs:
       - name: Check out
         with:
           persist-credentials: false
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
       - uses: jdx/mise-action@9dc7d5dd454262207dea3ab5a06a3df6afc8ff26 # v3.4.1
         with:
           version: v2025.11.5

.github/workflows/release.yml

@@ -20,7 +20,7 @@ jobs:
           echo "${#GPG_SIGNING_KEY}"
           echo "${GPG_SIGNING_KEY}" | gpg --batch --import-options import-show --import
       - name: Checkout Plugin Repository
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
         with:
           persist-credentials: false
 

.github/workflows/super-linter.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
           fetch-depth: 0

.github/workflows/test-release-build.yml

@@ -13,7 +13,7 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
         with:
           persist-credentials: false
       - uses: jdx/mise-action@9dc7d5dd454262207dea3ab5a06a3df6afc8ff26 # v3.4.1