Refresh the optional "coverage" dependency

Author: mdmintz

requirements.txt

@@ -118,7 +118,7 @@ pdfminer.six==20211012;python_version>="3.6"
 # ("pip install -r requirements.txt" also installs this, but "pip install -e ." won't.)
 
 coverage==5.5;python_version<"3.6"
-coverage==6.1;python_version>="3.6"
+coverage==6.1.1;python_version>="3.6"
 pytest-cov==2.12.1;python_version<"3.6"
 pytest-cov==3.0.0;python_version>="3.6"
 flake8==3.7.9;python_version<"3.5"

setup.py

@@ -234,7 +234,7 @@
         # pip install -e .[coverage]
         "coverage": [
             'coverage==5.5;python_version<"3.6"',
-            'coverage==6.1;python_version>="3.6"',
+            'coverage==6.1.1;python_version>="3.6"',
             'pytest-cov==2.12.1;python_version<"3.6"',
             'pytest-cov==3.0.0;python_version>="3.6"',
         ],