fix: Issue/604

[KYankee6]

Closes #604

can tested other repos because there are unwanted infrastructure dependency (why it needs to connect localhost:9999?)

Proposed Changes

in flux-dsl, if ColumnRestriction has custom() function and it is using regular expression operator(such as "=~"), then it does not use double quotes.

Checklist

• [x] CHANGELOG.md updated
• [x] Rebased/mergeable
• [x] A test has been added if appropriate
• [x] mvn test completes successfully
• [x] Commit messages are conventional
• [x] Sign CLA (if not already signed)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.37%. Comparing base (5effaa4) to head (4e32390).

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #717 +/- ## ========================================= Coverage 88.37% 88.37% - Complexity 784 786 +2 ========================================= Files 174 174 Lines 7089 7091 +2 Branches 390 391 +1 ========================================= + Hits 6265 6267 +2 Misses 698 698 Partials 126 126 ```

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