Bump actions/checkout from 5 to 6 in the all group (#65)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build_and_test.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
     - name: Checkout repo
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Go
       uses: actions/setup-go@v6

.github/workflows/publish.yml

@@ -73,7 +73,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Go
         uses: actions/setup-go@v6