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.
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index bdc5f20..236b979 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -15,14 +15,14 @@
       - "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
diff --git a/.github/workflows/msys2.yml b/.github/workflows/msys2.yml
index 0a949e3..fe28a67 100644
--- a/.github/workflows/msys2.yml
+++ b/.github/workflows/msys2.yml
@@ -15,14 +15,14 @@
       - "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
diff --git a/.github/workflows/os_comp.yml b/.github/workflows/os_comp.yml
index e9f5b7a..1d77984 100644
--- a/.github/workflows/os_comp.yml
+++ b/.github/workflows/os_comp.yml
@@ -16,7 +16,7 @@
       - "unittests/**"
       - ".github/workflows/images.yml"
       - ".github/workflows/os_comp.yml"
-      - "run_unittests.py"
+      - "run*tests.py"
   pull_request:
     paths:
       - "mesonbuild/**"
@@ -24,7 +24,7 @@
       - "unittests/**"
       - ".github/workflows/images.yml"
       - ".github/workflows/os_comp.yml"
-      - "run_unittests.py"
+      - "run*tests.py"
 
 permissions:
   contents: read