Stop recommending Python 3.4, use pythonX.Y names for recommends

See https://fedoraproject.org/wiki/Changes/RetirePython34
See https://lists.fedoraproject.org/archives/list/python-devel@lists.fedoraproject.org/message/VIUS7WMQMDX6H2WEIH7TVTMBB6SUHY7E/

python-tox.spec

@@ -45,13 +45,12 @@ BuildRequires:  python3-setuptools_scm
 # however it launches other Python versions as subprocesses.
 # It recommends all Python versions it supports. (This is an exception to
 # the rule that Fedora packages may not require the alternative interpreters.)
-Recommends:     python27
+Recommends:     python2.7
-Recommends:     python34
+Recommends:     python3.5
-Recommends:     python35
+Recommends:     python3.6
-Recommends:     python36
+Recommends:     python3.7
-Recommends:     python37
+Recommends:     python3.8
-Recommends:     python38
+Recommends:     python3.9
-Recommends:     python39
 Recommends:     pypy2-devel
 Recommends:     pypy3-devel
 Recommends:     python2-devel
@@ -145,6 +144,7 @@ rm -rf .path
 %changelog
 * Wed May 13 2020 Tomas Hrnciar <thrnciar@redhat.com> - 3.15.0-1
 - Update to 3.15.0
+- Stop recommending Python 3.4
 
 * Thu Mar 19 2020 Tomas Hrnciar <thrnciar@redhat.com> - 3.14.6-1
 - Update to 3.14.6