Preparing release version 4.6.4

[asottile]

figured I might as well release 4.6.x while I'm at it :D

[nicoddemus]

Was having the same idea. 😉

Well done!

[codecov]

Codecov Report

Merging #5520 into 4.6-maintenance will increase coverage by 0.26%.
The diff coverage is n/a.

@@                 Coverage Diff                 @@
##           4.6-maintenance    #5520      +/-   ##
===================================================
+ Coverage            95.92%   96.18%   +0.26%     
===================================================
  Files                  115      115              
  Lines                26438    26438              
  Branches              2610     2610              
===================================================
+ Hits                 25360    25430      +70     
+ Misses                 755      703      -52     
+ Partials               323      305      -18

Impacted Files	Coverage Δ
src/_pytest/fixtures.py	97.55% <0%> (+0.27%)	⬆️
testing/test_capture.py	99.25% <0%> (+0.29%)	⬆️
testing/test_terminal.py	99.84% <0%> (+0.31%)	⬆️
testing/test_config.py	99.83% <0%> (+0.33%)	⬆️
testing/test_pdb.py	99.22% <0%> (+0.38%)	⬆️
src/_pytest/pytester.py	91.66% <0%> (+0.42%)	⬆️
src/_pytest/assertion/rewrite.py	95.77% <0%> (+0.48%)	⬆️
testing/python/fixtures.py	99.09% <0%> (+0.56%)	⬆️
src/_pytest/junitxml.py	95.9% <0%> (+0.58%)	⬆️
testing/test_parseopt.py	97.97% <0%> (+0.8%)	⬆️
... and 9 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b85d98e...d3549df. Read the comment docs.