ci: use larger runners to build and scan (#397)

Signed-off-by: Niccolò Fei <niccolo.fei@enterprisedb.com>

Author: NiccoloFei

.github/workflows/bake_targets.yml

@@ -39,7 +39,7 @@ jobs:
   testbuild:
     # Start by building images for testing. We want to run security checks before pushing those to production.
     name: PostgreSQL ${{ inputs.postgresql_version }}
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest-16-cores
     permissions:
       contents: read
       packages: write
@@ -130,7 +130,7 @@ jobs:
 
   security:
     name: Security checks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-4-cores
     permissions:
       contents: read
       packages: read