CI: Carbonix disable features not required

7d74b28	CI: Carbonix disable features not required
This test would be difficult to port to a private repo or are not needed and making our CI take more longer time.
- macos not required
- test_environment not required
- test_size not required
- Cygwin not build except for plane

7c35cb5	workflow: Deleted test_coverage CI
 - This test is currently triggered on weekend and it is failing.
 - The reason of failing doesn't affect our code base.
 - Also, we are not building test codes which will change the coverage test results gained on AP4.3.8
 - SW-91

af269df	CI: Update to master & limit push run of CI

.github/workflows/cygwin_build.yml

@@ -2,6 +2,9 @@ name: Cygwin Build
 
 on:
   push:
+    branches:
+      - CxPilot
+      - master
     paths-ignore:
       # remove other vehicles
       - 'AntennaTracker/**'
@@ -212,7 +215,7 @@ jobs:
         id: check_files
         uses: andstor/file-existence-action@v2
         with:
-          files: "artifacts/*"
+          files: "artifacts/ArduPlane.elf.exe"
           fail: true
 
       - name: Archive build

.github/workflows/test_ccache.yml

@@ -2,6 +2,9 @@ name: test ccache
 
 on:
   push:
+    branches:
+      - CxPilot
+      - master
     paths-ignore:
       # remove other vehicles
       - 'AntennaTracker/**'

.github/workflows/test_chibios.yml

@@ -2,6 +2,9 @@ name: test chibios
 
 on:
   push:
+    branches:
+      - CxPilot
+      - master
     paths-ignore:
       # remove non chibios HAL
       - 'libraries/AP_HAL_Linux/**'