Update golang-jwt from v3.2.1 to v4

[greut]

The v4 branch is backward compatible with the v3.2.2 one and brings nicer go.mod (if anything)

https://github.com/golang-jwt/jwt/blob/main/MIGRATION_GUIDE.md

[aldas]

Will happen in v5.

I think changing to v4 would break casts that (unaware of upgrade) people are using when getting token value from context store. If golang-jwt/v4 is really needed please see workarounds for it #1940

[codecov]

Codecov Report

Merging #1978 (7842f5c) into master (7f502b1) will increase coverage by 0.19%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1978      +/-   ##
==========================================
+ Coverage   91.04%   91.23%   +0.19%     
==========================================
  Files          32       33       +1     
  Lines        2802     2886      +84     
==========================================
+ Hits         2551     2633      +82     
- Misses        160      161       +1     
- Partials       91       92       +1     

Impacted Files	Coverage Δ
middleware/jwt.go	90.26% <ø> (ø)
echo.go	94.15% <0.00%> (ø)
middleware/request_logger.go	97.56% <0.00%> (ø)
router.go	95.72% <0.00%> (+0.02%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 7f502b1...7842f5c. Read the comment docs.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed within a month if no further activity occurs. Thank you for your contributions.

[aldas]

I'll leave it closed. golang-jwt version has been bumped to v4 in Echo v5 proposal. See this discussion for details #2000