pin python coverage package

This reverts commit 97d4e5f.

Author: nmdefries

safegraph_patterns/delphi_safegraph_patterns/run.py

@@ -17,7 +17,6 @@
 
 from .process import process
 
-mp.set_start_method("spawn")
 
 METRICS = [
         # signal_name, naics_code, wip
@@ -106,7 +105,7 @@ def run_module(params):
                                logger=logger,
                                )
 
-        with mp.get_context("spawn").Pool(n_core) as pool:
+        with mp.Pool(n_core) as pool:
             pool.map(process_file, files)
 
     elapsed_time_in_seconds = round(time.time() - start_time, 2)

safegraph_patterns/setup.py

@@ -7,6 +7,7 @@
     "pydocstyle",
     "pytest",
     "pytest-cov",
+    "coverage==6.2.0",
     "pylint==2.8.3",
     "delphi-utils"
 ]