Support new map type in step functions

[kddejong]

Issue #, if available:
Fix #1137

Description of changes:

• Update rule E2532 to look for new Map type in Step Function state files

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[codecov]

Codecov Report

Merging #1143 into master will not change coverage.
The diff coverage is 66.66%.

@@           Coverage Diff           @@
##           master    #1143   +/-   ##
=======================================
  Coverage   87.77%   87.77%           
=======================================
  Files         135      135           
  Lines        7993     7993           
  Branches     1964     1964           
=======================================
  Hits         7016     7016           
  Misses        580      580           
  Partials      397      397

Impacted Files	Coverage Δ
...lint/rules/resources/stepfunctions/StateMachine.py	90.9% <66.66%> (ø)	⬆️

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[kddejong]

Coverage errors are related to cleaning up some formatting.

[TomasChmelik]

"Parameters" key isn't allowed for this new Map type. https://docs.aws.amazon.com/step-functions/latest/dg/amazon-states-language-map-state.html?shortFooter=true#map-state-example-params