Bump actions/checkout to v6 (#32)

### Description

https://github.com/actions/checkout?tab=readme-ov-file#checkout-v6

Author: ScottBrenner

.github/workflows/dependency-review.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Dependency Review
         uses: actions/dependency-review-action@v4
         with:

.github/workflows/yaml-lint.yml

@@ -5,6 +5,6 @@ jobs:
   lint-yaml:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: yaml-lint
         uses: ibiqlik/action-yamllint@v3