fix:fix header validation when using Chinese char.

[SkyeBeFreeman]

PR Type

Bugfix.

Describe what this PR does for and how you did.

Adding the issue link (#xxx) if possible.

fixes #1106

Note

Checklist

• Add information of this PR to CHANGELOG.md in root of project.
• Add documentation in javadoc or comment below the PR if necessary.

Checklist (Optional)

• Will pull request to branch of 2020.0.
• Will pull request to branch of 2022.0.
• Will pull request to branch of hoxton.

[codecov]

Codecov Report

Merging #1166 (84f1f75) into 2021.0 (d0fde95) will decrease coverage by 0.09%.
The diff coverage is 62.50%.

@@             Coverage Diff              @@
##             2021.0    #1166      +/-   ##
============================================
- Coverage     75.73%   75.64%   -0.09%     
  Complexity     1640     1640              
============================================
  Files           258      258              
  Lines          6005     6020      +15     
  Branches        743      743              
============================================
+ Hits           4548     4554       +6     
- Misses         1058     1067       +9     
  Partials        399      399              

Files	Coverage Δ
...ris/ratelimit/filter/QuotaCheckReactiveFilter.java	89.58% <70.00%> (-5.88%)	⬇️
...aris/ratelimit/filter/QuotaCheckServletFilter.java	90.47% <57.14%> (-6.83%)	⬇️
...enhancement/plugin/PolarisEnhancedPluginUtils.java	77.17% <57.14%> (-1.90%)	⬇️