Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/master.yml

@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -69,7 +69,7 @@ jobs:
           - kotest-wasm
     steps:
       - name: Checkout the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -110,7 +110,7 @@ jobs:
           - kotest-wasm
     steps:
       - name: Checkout the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

kotest-multiplatform/.github/workflows/workflow-linux.yml

@@ -4,7 +4,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: recursive
       - uses: actions/setup-java@v4

kotest-multiplatform/.github/workflows/workflow-macos.yml

@@ -4,7 +4,7 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: recursive
       - uses: actions/setup-java@v4

kotest-multiplatform/.github/workflows/workflow-windows.yml

@@ -4,7 +4,7 @@ jobs:
   build:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: recursive
       - uses: actions/setup-java@v4