update workflow versions

.github/workflows/main.yml

@@ -21,7 +21,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Set environment variables
         run: |
@@ -29,7 +29,7 @@ jobs:
           mkdir plugins
 
       - name: Setup SourcePawn Compiler
-        uses: rumblefrog/setup-sp@v1.0.1
+        uses: rumblefrog/setup-sp@v1.2.4
         with:
           # Version of SP compiler
           version: 1.10.x
@@ -40,7 +40,7 @@ jobs:
         working-directory: ${{ env.SCRIPTS_PATH }}
 
       - name: Upload Artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: eventqueuefix-dev
           path: |