fix(api-gateway): route regression for non-word and unsafe URI chars

[heitorlessa]

Issue #, if available: #550

Description of changes:

Checklist

• Meet tenets criteria
• Update tests
• PR title follows conventional commit semantics

Breaking change checklist

RFC issue #:

• Migration process documented
• Implement warnings (if it can live side by side)

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

Merging #556 (db20c9b) into develop (a768b68) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           develop     #556   +/-   ##
========================================
  Coverage    99.86%   99.86%           
========================================
  Files          113      113           
  Lines         4483     4483           
  Branches       243      243           
========================================
  Hits          4477     4477           
  Misses           3        3           
  Partials         3        3           

Impacted Files	Coverage Δ
aws_lambda_powertools/event_handler/api_gateway.py	100.00% <100.00%> (ø)

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[heitorlessa]

@michaelbrewer mind having a second look before I release the patch version?

Thank you!

[heitorlessa]

alright, it's nearly 10pm here, I'm going ahead and checking with the OP

[michaelbrewer]

@heitorlessa works for me