fix: Incorrect YAML syntax highlighting for version numbers with multiple periods

[andrewnester]

Issue #, if available: #4468

Description of changes:
Fixed incorrect YAML syntax highlighting for version numbers with multiple periods

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[codecov]

Codecov Report

Merging #4827 (e130e89) into master (44b6c12) will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4827      +/-   ##
==========================================
+ Coverage   71.11%   71.16%   +0.05%     
==========================================
  Files         554      554              
  Lines       55715    55715              
  Branches    10420    10420              
==========================================
+ Hits        39620    39648      +28     
+ Misses      16095    16067      -28     

Flag	Coverage Δ
unittests	71.16% <ø> (+0.05%)	⬆️

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Impacted Files	Coverage Δ
lib/ace/mode/yaml_highlight_rules.js	86.84% <ø> (ø)
lib/ace/editor.js	81.63% <0.00%> (+1.97%)	⬆️

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[nightwing]

Should we still highlight .1 as a number it is usually interpreted as a number in most languages? If not highlighting it is intentional the pull request looks good to me.