Updating ChangeLog since release of v5.3.0

[dscbot]

This change is 

[codecov[bot]]

Codecov Report

Merging #1416 (e294818) into master (3882797) will decrease coverage by 0%. The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #1416   +/-   ##
======================================
- Coverage      84%     84%   -1%     
======================================
  Files         145     145           
  Lines       22645   22645           
======================================
- Hits        19076   19074    -2     
- Misses       3569    3571    +2     

Impacted Files	Coverage Δ
...s/MSFT_SPInstallPrereqs/MSFT_SPInstallPrereqs.psm1	88% <0%> (-1%)	:arrow_down:

[johlju]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s).

[johlju]

@ykuijs I switched the build stage to use windows-latest because the Ubuntu build worker no longer works (by default) with MOF-based resources.