fix: +00:00 timezone bug

[DimaBur]

When we have +00:00 timezone offset like 'Europe/London" dayjs gets users timezone offset, which causes incorrect time showing in different cases.

Example

Current behavior: dayjs('2021-10-31T15:00:00+00:00').tz('Europe/London').format() // 2021-10-31T15:00:00Z

Behavior after fix: dayjs('2021-10-31T15:00:00+00:00').tz('Europe/London').format() // 2021-10-31T15:00:00+00:00

[codecov[bot]]

Codecov Report

Merging #1678 (8691b58) into dev (b5a1391) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##               dev     #1678   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          179       179           
  Lines         1996      1997    +1     
  Branches       507       508    +1     
=========================================
+ Hits          1996      1997    +1     

Impacted Files	Coverage Δ
src/plugin/utc/index.js	100.00% <100.00%> (ø)

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[felipehertzer]

Hey @iamkun is there any plan to merge this fix? I'm having the same problem with Europe/London. Thanks