golangci-lint: fix invalid nakedret config, disallow for any func length

[thaJeztah]

cli/internal/oauth: don't use naked returns (nakedret)

cli/internal/oauth/jwt.go:62:3: naked return in func `GetClaims` with 9 lines of code (nakedret)
return
^
cli/internal/oauth/jwt.go:67:2: naked return in func `GetClaims` with 9 lines of code (nakedret)
return
^

cli/command/container: don't use naked returns (nakedret)

cli/command/container/cp.go:206:3: naked return in func `resolveLocalPath` with 5 lines of code (nakedret)
return
^

golangci-lint: fix invalid nakedret config, disallow for any func length

The regex was added before we migrateed from gometalinter in
dbd96ba (#620), and got migrated to golangci-lint
in b7e06f2 (#2173). The format used for the config
was invalid, and migrating it to the right format didn't make a difference,
so we can remove it.

As naked returns are generally not desirable, also setting the minimum func
length to 0 (i.e., don't allow any naked returns), instead of the default

- Human readable description for the release notes

- A picture of a cute animal (not mandatory but encouraged)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 45.45455% with 6 lines in your changes missing coverage. Please review.

Project coverage is 59.17%. Comparing base (88a019a) to head (1c8243c).
Report is 46 commits behind head on master.

❌ Your patch status has failed because the patch coverage (45.45%) is below the target coverage (50.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@ Coverage Diff @@## master #5836 +/- ##
==========================================
- Coverage 59.18% 59.17% -0.01% 
==========================================
Files 352 352 Lines 29548 29552 +4 ==========================================
+ Hits 17487 17488 +1 - Misses 11080 11082 +2 - Partials 981 982 +1