Use Release builds for CI

Debug builds generate enormous QA files.  We need to test the
regressions primarily, so Release with its smaller files serves this
purpose

.gitlab/Fedora-Linux-CI.yml

@@ -22,7 +22,7 @@ fedora_build_linux:
     - cd build/linux
     - cmake
       -G Ninja
-      -DCMAKE_BUILD_TYPE=Debug
+      -DCMAKE_BUILD_TYPE=Release
       -DKICAD_STDLIB_LIGHT_DEBUG=ON
       -DKICAD_USE_OCC=ON
       -DKICAD_SPICE=ON

.gitlab/Ubuntu-20.04-CI.yml

@@ -28,7 +28,7 @@ ubuntu20.04_build:
       -G Ninja
       -DCMAKE_C_COMPILER_LAUNCHER=ccache
       -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
-      -DCMAKE_BUILD_TYPE=Debug
+      -DCMAKE_BUILD_TYPE=Release
       -DKICAD_STDLIB_LIGHT_DEBUG=ON
       -DKICAD_SCRIPTING_WXPYTHON=ON
       -DKICAD_USE_OCC=ON