chore: use tokenless way for coverage & update configs

[imbajin]

TODO: refact the whole issue template (much more user friendly)

The core reason of this problem is github-API didn't allow FORK/Outside PR use current project's secret token, so that code coverage can't load correctly.

Refer the issue from code coverage & official github blog, we have 3 way to solve this problem:

1. use the code coverage version v1.0 instead of 1.0.x, and it works

and it occurs:

2.remove useless secret token for public repository (private repo needs)

refer code coverage issue: https://github.com/codecov/codecov-action/issues/29

3. share secrets with fork projects or prs (BETA)

refer github official blog / doc:

• blog: GitHub Actions improvements for fork and pull request workflows
• use pull_request_target label.

[codecov]

Codecov Report

Merging #1529 (840fb2d) into master (44fc43c) will increase coverage by 0.62%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1529      +/-   ##
============================================
+ Coverage     59.03%   59.66%   +0.62%     
- Complexity     6090     6151      +61     
============================================
  Files           406      410       +4     
  Lines         33064    33260     +196     
  Branches       4574     4591      +17     
============================================
+ Hits          19519    19844     +325     
+ Misses        11486    11341     -145     
- Partials       2059     2075      +16     

Impacted Files	Coverage Δ
...ain/java/com/baidu/hugegraph/api/auth/UserAPI.java	75.80% <0.00%> (-2.16%)	⬇️
...om/baidu/hugegraph/backend/cache/CacheManager.java	87.03% <0.00%> (-1.20%)	⬇️
...aidu/hugegraph/backend/tx/AbstractTransaction.java	70.06% <0.00%> (-0.91%)	⬇️
...c/main/java/com/baidu/hugegraph/auth/HugeUser.java	88.07% <0.00%> (-0.61%)	⬇️
.../com/baidu/hugegraph/auth/StandardAuthManager.java	96.50% <0.00%> (-0.42%)	⬇️
...m/baidu/hugegraph/backend/tx/GraphTransaction.java	79.84% <0.00%> (-0.18%)	⬇️
...du/hugegraph/backend/tx/GraphIndexTransaction.java	81.04% <0.00%> (-0.12%)	⬇️
...n/java/com/baidu/hugegraph/config/CoreOptions.java	99.45% <0.00%> (-0.01%)	⬇️
...n/java/com/baidu/hugegraph/version/ApiVersion.java	75.00% <0.00%> (ø)
...a/com/baidu/hugegraph/license/LicenseVerifier.java	0.00% <0.00%> (ø)
... and 24 more

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