PMM-15195 Fixes and MySQL 9.7 changes.

[JiriCtvrtka]

PMM-15195

MySQL Exporter PR: percona/mysqld_exporter#387
FB: Percona-Lab/pmm-submodules#4479

[JiriCtvrtka]

@copilot review

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 37.04%. Comparing base (31318c7) to head (b71fdd2).
⚠️ Report is 35 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5648      +/-   ##
==========================================
- Coverage   43.59%   37.04%   -6.56%     
==========================================
  Files         415      215     -200     
  Lines       43134     7157   -35977     
  Branches        0      592     +592     
==========================================
- Hits        18804     2651   -16153     
+ Misses      22454     4311   -18143     
+ Partials     1876      195    -1681     

Flag	Coverage Δ
admin	34.96% <ø> (+0.17%)	⬆️
agent	?
managed	?
unittests	41.29% <ø> (?)
vmproxy	?

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[JiriCtvrtka]

@copilot review

[JiriCtvrtka]

@copilot review