fix: template does not follow RFC3339 time format

[ifplusor]

What problem does this PR solve?

template does not follow the RFC3339 time format.

Problem Summary

What is changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

[codecov]

Codecov Report

Merging #639 (f3da796) into main (ee76217) will decrease coverage by 5.84%.
Report is 101 commits behind head on main.
The diff coverage is 3.63%.

❗ Current head f3da796 differs from pull request most recent head 16429d8. Consider uploading reports for the commit 16429d8 to get more accurate results

@@            Coverage Diff             @@
##             main     #639      +/-   ##
==========================================
- Coverage   57.07%   51.24%   -5.84%     
==========================================
  Files         190      259      +69     
  Lines       15191    19514    +4323     
==========================================
+ Hits         8670     9999    +1329     
- Misses       5884     8698    +2814     
- Partials      637      817     +180     

Flag	Coverage Δ
unittests	51.24% <3.63%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
api/errors/app.go	30.90% <ø> (ø)
lib/bytes/escape.go	54.46% <ø> (ø)
lib/bytes/io.go	0.00% <ø> (ø)
lib/bytes/parse.go	7.14% <ø> (ø)
lib/bytes/unsafe.go	100.00% <ø> (ø)
lib/bytes/utf8.go	11.11% <ø> (ø)
lib/json/path/parse.go	49.41% <ø> (ø)
lib/json/path/path.go	0.00% <ø> (ø)
lib/json/path/segment.go	0.00% <ø> (ø)
lib/json/path/selector.go	0.00% <ø> (ø)
... and 30 more

... and 393 files with indirect coverage changes

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