Disable flaskmaster-py38 (#1247)

* Disable flaskmaster-py38 and pin coverage-py38

* Add py37 coverage version

* Revert coverage version

* Add more info for disabled test

Author: lrafeei

tox.ini

@@ -138,7 +138,9 @@ envlist =
     python-framework_fastapi-{py37,py38,py39,py310,py311,py312,py313},
     python-framework_flask-py37-flask020205,
     python-framework_flask-{py38,py39,py310,py311,py312,pypy310}-flask02,
-    python-framework_flask-{py38,py39,py310,py311,py312,py313,pypy310}-flask{latest,master},
+    ; python-framework_flask-py38-flaskmaster fails, even with Flask-Compress<1.16 and coverage==7.61 for py37,py38
+    python-framework_flask-py38-flasklatest,
+    python-framework_flask-{py39,py310,py311,py312,py313,pypy310}-flask{latest,master},
     python-framework_graphene-{py37,py38,py39,py310,py311,py312,py313}-graphenelatest,
     python-framework_graphql-{py37,py38,py39,py310,py311,py312,py313,pypy310}-graphql03,
     python-framework_graphql-{py37,py38,py39,py310,py311,py312,py313,pypy310}-graphql{latest},