deps: update actions/checkout action to v5 (#995)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://redirect.github.com/actions/checkout) |
action | major | `v4` -> `v5` |

---

### Release Notes

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

### [`v5`](https://redirect.github.com/actions/checkout/compare/v4...v5)

[Compare
Source](https://redirect.github.com/actions/checkout/compare/v4...v5)

</details>

---

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are satisfied.

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rebase/retry checkbox.

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---

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---

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View the [repository job
log](https://developer.mend.io/github/hetznercloud/hcloud-cloud-controller-manager).

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.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: actions/setup-python@v5
         with:
@@ -31,7 +31,7 @@ jobs:
     name: Unit Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version-file: go.mod
@@ -56,7 +56,7 @@ jobs:
             helm
           helm: v3.11.2
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Generate manifests from helm chart
         run: scripts/update-deployment-yamls.sh
 
@@ -77,7 +77,7 @@ jobs:
             helm
           helm: v3.18.4 # renovate: datasource=github-releases depName=helm/helm
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Verify
         run: |

.github/workflows/goreleaser.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
 

.github/workflows/robot.yml

@@ -26,7 +26,7 @@ jobs:
       ANSIBLE_FORCE_COLOR: true
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Install robot server
         env:

.github/workflows/test_e2e.yml

@@ -33,7 +33,7 @@ jobs:
       CERT_DOMAIN: hc-integrations-test.de
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: actions/setup-go@v5
         with:
@@ -150,7 +150,7 @@ jobs:
       ROBOT_ENABLED: "true"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: actions/setup-go@v5
         with: