chore(deps): update actions/checkout action to v5 (#905)

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>

---

### Configuration

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Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR is behind base branch, 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

---

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View the [repository job
log](https://developer.mend.io/github/launchdarkly/js-core).

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.github/workflows/akamai-base.yml

@@ -14,7 +14,7 @@ jobs:
   build-test-akamai:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
       - id: shared
         name: Shared CI Steps

.github/workflows/akamai-edgekv.yml

@@ -14,7 +14,7 @@ jobs:
   build-test-akamai-edgekv:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
       - id: shared
         name: Shared CI Steps

.github/workflows/akamai-edgeworker-sdk.yml

@@ -14,7 +14,7 @@ jobs:
   build-test-akamai-edgeworker-sdk:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
         with:
           node-version: 24.x

.github/workflows/browser-telemetry.yml

@@ -14,7 +14,7 @@ jobs:
   build-test-browser-telemetry:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
         with:
           node-version: 24.x

.github/workflows/browser.yml

@@ -22,7 +22,7 @@ jobs:
         version: [18, 21]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
         with:
           node-version: ${{ matrix.version }}

.github/workflows/cloudflare.yml

@@ -14,7 +14,7 @@ jobs:
   build-test-cloudflare:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
       - id: shared
         name: Shared CI Steps

.github/workflows/combined-browser.yml

@@ -22,7 +22,7 @@ jobs:
         version: [18, 21]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
         with:
           node-version: ${{ matrix.version }}

.github/workflows/common.yml

@@ -14,7 +14,7 @@ jobs:
   build-test-common:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
         with:
           node-version: 24.x

.github/workflows/dependency-scan.yml

@@ -10,7 +10,7 @@ jobs:
   generate-nodejs-sbom:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       - name: Generate SBOM
         uses: launchdarkly/gh-actions/actions/dependency-scan/generate-sbom@main
@@ -22,7 +22,7 @@ jobs:
     needs:
       - generate-nodejs-sbom
     steps:
-      - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       - name: Evaluate SBOM Policy
         uses: launchdarkly/gh-actions/actions/dependency-scan/evaluate-policy@main

.github/workflows/fastly.yml

@@ -14,7 +14,7 @@ jobs:
   build-test-fastly:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
       - id: shared
         name: Shared CI Steps