De-duplicate GitHub actions config (#532)

* Trigger Build

* De-duplicate GitHub actions config

* Fix if statement

* Add codecov token

* Update codecov action

---------

Co-authored-by: Norman Rzepka <[email protected]>

Author: dstansby

.github/workflows/ci-osx.yaml

@@ -1,4 +1,4 @@
-name: Linux CI
+name: Tests
 
 on: [push, pull_request]
 
@@ -8,11 +8,12 @@ concurrency:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.platform }}
     strategy:
       fail-fast: false
       matrix:
         python-version: ["3.10", "3.11", "3.12"]
+        platform: [ubuntu-latest, windows-latest, macos-12]
 
     steps:
       - name: Checkout source
@@ -41,6 +42,13 @@ jobs:
           c-compiler cxx-compiler
           python=${{matrix.python-version}} wheel pip
 
+      - name: Install clang
+        shell: "bash -l {0}"
+        if: ${{ matrix.platform }} == 'macos-12'
+        run: |
+          conda activate env
+          conda install -y 'clang>=12.0.1,<17'
+
       - name: Show info about `env` environment
         shell: "bash -l {0}"
         run: |
@@ -71,11 +79,7 @@ jobs:
           conda activate env
           pytest -v
 
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
-          #token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
-            #files: ./coverage1.xml,./coverage2.xml # optional
-            #flags: unittests # optional
-            #name: codecov-umbrella # optional
-            #fail_ci_if_error: true # optional (default = false)
-          verbose: true # optional (default = false)
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true