ci: bump actions/checkout from 5 to 6 (#71)

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

Author: dependabot[bot]

.github/workflows/check_helm.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: hmarr/[email protected]
 
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Run helm template and lint
         env:

.github/workflows/publish.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: hmarr/[email protected]
 
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: '2'