Update check_plugins.yml

Update checkout to a Node.js 24 runner (we don't use git credentials so no point in v6)
Replaced 1.13 latest check to a known last working version to compile against (for now, got tired of big red X and the spam e-mails)

Author: SirPlease

.github/workflows/check_plugins.yml

@@ -32,10 +32,10 @@ jobs:
           #- "1.10"
           #- "1.11"
           - "1.12"
-          - "1.13"
+          - "1.13.7296"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set environment variables
         run: |
           echo "SCRIPTS_PATH=$GITHUB_WORKSPACE/addons/sourcemod/scripting" >> $GITHUB_ENV