fix test for show(::InfExtendedTime) on julia v1.5

[cjdoris]

No description provided.

[codecov]

Codecov Report

Merging #26 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #26   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           20        20           
  Lines          188       211   +23     
=========================================
+ Hits           188       211   +23     

Impacted Files	Coverage Δ
src/common.jl	100.00% <0.00%> (ø)
src/infinite/conversion.jl	100.00% <0.00%> (ø)
src/infextendedreal/base.jl	100.00% <0.00%> (ø)
src/infextendedtime/base.jl	100.00% <0.00%> (ø)
src/infextendedreal/parse.jl	100.00% <0.00%> (ø)

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