[CI] Add glob for Github Actions labeler job (#158)

Author: aobolensk

Diff for: .github/labeler.yml

@@ -1,13 +1,13 @@
 'task:mpi':
-  - "tasks/mpi"
+  - "tasks/mpi/**"
 'task:omp':
-  - "tasks/omp"
+  - "tasks/omp/**"
 'task:seq':
-  - "tasks/seq"
+  - "tasks/seq/**"
 'task:stl':
-  - "tasks/stl"
+  - "tasks/stl/**"
 'task:tbb':
-  - "tasks/tbb"
+  - "tasks/tbb/**"
 ci:
-  - ".github"
+  - ".github/**"
   - "appveyor.yml"