[tests] require coverage >= 7.6.10 with Python 3.9+

This also enables multiline exclusion regex (since 7.6.0).

Bug: T380372
Change-Id: I83bf9df9b02244beb02cccb1c5963ab08cba831f

.github/workflows/doctest.yml

@@ -51,7 +51,8 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip --version
-        pip install coverage
+        pip install "coverage == 7.6.1; python_version < '3.9'"
+        pip install "coverage >= 7.6.10; python_version > '3.8'"
         pip install "tomli; python_version < '3.11'"
         pip install mwparserfromhell
         pip install packaging

.github/workflows/login_tests-ci.yml

@@ -75,7 +75,8 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip --version
-        pip install coverage
+        pip install "coverage == 7.6.1; python_version < '3.9'"
+        pip install "coverage >= 7.6.10; python_version > '3.8'"
         pip install "tomli; python_version < '3.11'"
         pip install mwparserfromhell
         pip install packaging

.github/workflows/oauth_tests-ci.yml

@@ -75,7 +75,8 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip --version
-        pip install coverage
+        pip install "coverage == 7.6.1; python_version < '3.9'"
+        pip install "coverage >= 7.6.10; python_version > '3.8'"
         # tomli required for coverage due to T380697
         pip install "tomli; python_version < '3.11'"
         pip install mwparserfromhell

.github/workflows/pywikibot-ci.yml

@@ -90,8 +90,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip --version
-        # T380732
-        pip install "coverage < 7.6.2; implementation_name=='pypy' and python_version=='3.10'"
         if [ -f dev-requirements.txt ]; then pip install -r dev-requirements.txt; fi
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
         pip install wikitextparser

dev-requirements.txt

@@ -7,7 +7,8 @@ pytest-attrib>=0.1.3
 pytest-xvfb>=3.0.0
 
 pre-commit
-coverage>=5.2.1
+coverage==7.6.1; python_version < "3.9"
+coverage>=7.6.10; python_version > "3.8"
 # required for coverage (T380697)
 tomli>=2.0.1; python_version < "3.11"