Update deprecated GitHub Actions to latest versions

Updated all workflows to use non-deprecated action versions:
- actions/checkout@v2 -> actions/checkout@v4
- actions/setup-node@v1 -> actions/setup-node@v4
- actions/upload-artifact@v2 -> actions/upload-artifact@v4

This removes deprecation warnings in GitHub Actions.

Author: claude

.github/workflows/launcher.yml

@@ -27,20 +27,20 @@ jobs:
             arch: "--x64"
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           # This should fix git rev-list --count HEAD
           # https://stackoverflow.com/a/65056108
           fetch-depth: 0
           path: repo-folder
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           repository: gajop/spring-launcher
           path: spring-launcher
 
       - name: Setup NodeJs
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
         with:
           node-version: '17.x'
 

.github/workflows/luacheck.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: 'true'
 

.github/workflows/smoke-test.yml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           submodules: 'true'
 
@@ -199,7 +199,7 @@ jobs:
 
       - name: Upload test artifacts on failure
         if: failure()
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: smoke-test-logs
           path: |