gh actions: Increase RAM limit to 6.5GB

Author: ninjab3s

.github/codeql/codeql-config.yml

@@ -0,0 +1,2 @@
+name: "CodeQL config"
+ram: 6500

.github/workflows/codeql.yml

@@ -46,6 +46,7 @@ jobs:
       uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
+        config-file: ./.github/codeql/codeql-config.yml
 
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)