codeql.yml: add 'apt-get update' (#1051)

fixes issues like https://github.com/OSGeo/gdal/actions/runs/8032403542/job/21944690464#step:4:126

.github/workflows/codeql.yml

@@ -53,6 +53,7 @@ jobs:
 
     - name: Install dependencies
       run: |
+          sudo apt-get update
           sudo apt-get install -y cmake g++
 
     - name: Build