build: adjust codeql build to use net9

Refs: #1155

.github/workflows/codeql.yml

@@ -36,9 +36,11 @@ on:
     branches: [main]
     paths:
       - 'src/**'
+      - 'tests/**'
   pull_request:
     paths:
       - 'src/**'
+      - 'tests/**'
   schedule:
     - cron: "0 0 * * *"
   workflow_dispatch:
@@ -66,6 +68,7 @@ jobs:
         # Use only 'java' to analyze code written in Java, Kotlin or both
         # Use only 'javascript' to analyze code written in JavaScript, TypeScript or both
         # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+        dotnet-version: ['9.0']
 
     steps:
       - name: Checkout repository
@@ -83,6 +86,12 @@ jobs:
           # For more details on CodeQL's query packs, refer to: https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
           queries: +security-extended,security-and-quality
 
+      # This is needed because codeQl currently only supports .NET8 
+      - name: Setup .NET Core SDK ${{ matrix.dotnet-version }}
+        uses: actions/setup-dotnet@3e891b0cb619bf60e2c25674b222b8940e2c1c25 # v4.1.0
+        with:
+          dotnet-version: ${{ matrix.dotnet-version }}
+
       # Autobuild attempts to build any compiled languages (C/C++, C#, Go, Java, or Swift).
       # Automates dependency installation for Python, Ruby, and JavaScript, optimizing the CodeQL analysis setup.
       # If this step fails, then you should remove it and run the build manually (see below)

.github/workflows/dependencies.yaml

@@ -61,8 +61,6 @@ jobs:
         uses: actions/setup-dotnet@3e891b0cb619bf60e2c25674b222b8940e2c1c25 # v4.1.0
         with:
           dotnet-version: ${{ matrix.dotnet-version }}
-          # change to preview .NET 9 until fix for https://github.com/NuGet/Home/issues/12954 gets released for .NET 8
-          dotnet-quality: 'preview'
 
       - name: Checkout repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2