Bump minimum required CMake version to 3.16 in weekly CI

Signed-off-by: Björn Svensson <[email protected]>

Author: bjosv

.github/workflows/weekly.yml

@@ -256,13 +256,13 @@ jobs:
           scripts/test.sh
 
   cmake-minimum-required:
-    name: CMake 2.8.12 (min. required)
+    name: CMake 3.16 (min. required)
     runs-on: ubuntu-24.04
     steps:
       - name: Setup cmake
         uses: jwlawson/actions-setup-cmake@802fa1a2c4e212495c05bf94dba2704a92a472be # v2.0.2
         with:
-          cmake-version: 2.8.12
+          cmake-version: 3.16
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Build and run tests
         run: |