workflows: Trigger on all test harness changes

The following workflows have been updated so that they are
triggered when the any of the test harnesses are updated:

  macos,
  os-comp,
  msys2

Previously only changes to `run_unittests.py` caused these
workflows to be executed.

.github/workflows/macos.yml

@@ -15,14 +15,14 @@ on:
       - "test cases/**"
       - "unittests/**"
       - ".github/workflows/macos.yml"
-      - "run_unittests.py"
+      - "run*tests.py"
   pull_request:
     paths:
       - "mesonbuild/**"
       - "test cases/**"
       - "unittests/**"
       - ".github/workflows/macos.yml"
-      - "run_unittests.py"
+      - "run*tests.py"
 
 permissions:
   contents: read

.github/workflows/msys2.yml

@@ -15,14 +15,14 @@ on:
       - "test cases/**"
       - "unittests/**"
       - ".github/workflows/msys2.yml"
-      - "run_unittests.py"
+      - "run*tests.py"
   pull_request:
     paths:
       - "mesonbuild/**"
       - "test cases/**"
       - "unittests/**"
       - ".github/workflows/msys2.yml"
-      - "run_unittests.py"
+      - "run*tests.py"
 
 permissions:
   contents: read

.github/workflows/os_comp.yml

@@ -16,15 +16,15 @@ on:
       - "unittests/**"
       - ".github/workflows/images.yml"
       - ".github/workflows/os_comp.yml"
-      - "run_unittests.py"
+      - "run*tests.py"
   pull_request:
     paths:
       - "mesonbuild/**"
       - "test cases/**"
       - "unittests/**"
       - ".github/workflows/images.yml"
       - ".github/workflows/os_comp.yml"
-      - "run_unittests.py"
+      - "run*tests.py"
 
 permissions:
   contents: read