Bump actions/checkout from 5 to 6 (#7)

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the codebase.
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: "ngine_io.vultr_cloud"
 

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the codebase.
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: "ngine_io.vultr_cloud"