Update checkout action.

Removes node.js 16 error.

Author: thejpster

.github/workflows/kibot.yml

@@ -29,7 +29,7 @@ jobs:
     container:
       image: ghcr.io/inti-cmnb/kicad8_auto:1.6.5
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
             submodules: true
       - name: Run KiBot for DRC
@@ -40,7 +40,7 @@ jobs:
     container:
       image: ghcr.io/inti-cmnb/kicad8_auto:1.6.5
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
             submodules: true
       - name: Run KiBot for ERC
@@ -52,7 +52,7 @@ jobs:
     container:
       image: ghcr.io/inti-cmnb/kicad8_auto:1.6.5
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
             submodules: true
       - name: Get Branch Name