docs: change all the MySQL version from 5.7.10 to 5.7.25

[XuHuaiyu]

What problem does this PR solve?

Change all the MySQL version from 5.7.10 to 5.7.25.
related PR: pingcap/parser#231

What is changed and how it works?

N/A

Check List

Tests

• Manual test
  Start a new tidb-server and connect to it from MySQL-client:

Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.25-TiDB-v3.0.0-beta-152-g5ad33c88d-dirty MySQL Community Server
(Apache License 2.0)
...

Code changes

N/A

Side effects

Related changes

N/A

[eurekaka]

LGTM

[zz-jason]

LGTM

Please fix go mod tidy

[codecov-io]

Codecov Report

Merging #9553 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #9553      +/-   ##
==========================================
- Coverage   67.32%   67.31%   -0.02%     
==========================================
  Files         376      376              
  Lines       78967    78967              
==========================================
- Hits        53162    53153       -9     
- Misses      21052    21059       +7     
- Partials     4753     4755       +2

Impacted Files	Coverage Δ
store/tikv/2pc.go	77.7% <0%> (-1.77%)	⬇️
executor/join.go	79.06% <0%> (-0.52%)	⬇️
executor/aggregate.go	79.11% <0%> (+0.21%)	⬆️

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[jackysp]

/run-all-tests

[jackysp]

This case testInnodbTablespaceEncryption failed in jdbc test.
Because we upgrade the version and this check passed,

if (!versionMeetsMinimum(5, 7, 11)) {
            return;
}

but, TiDB doesn't support

CREATE TABLE testInnodbTablespaceEncryption (id INT) ENCRYPTION='y'

this statement.

[XuHuaiyu]

/run-common-test tidb-test=pr/749

[zz-jason]

/run-all-tests