fix: improve input validation to allow quotes for strategy parameter

[jordan-homan]

Improve input validation to allow quotes for strategy parameter

Updated the strategy parameter to allow " or ' as input wrapped around valid input to reduce 4xx errors.

Testing

Invoked CURL and REST requests passing values such as 'fast', "fast", and fast for parameter values for the strategy.

curl -X POST "PATH_TO_API" \
  -H 'accept: application/json' \
  -H 'Content-Type: multipart/form-data' \
  -H 'unstructured-api-key: KEY' \
  -F "files=@/path_to_file.pdf" \
  -F "strategy='fast'" \
  -F "split-pdf-page=True" \
  -F "split-pdf-allow-failed=True" \
  -F "split-pdf-concurrency-level=15"

Added unit tests (passing).

[awalker4]

LGTM! Can you add a note at the top of changelog.md? I believe the last release was just cut, in which case you can:

• Start a new section with 0.0.xx-dev0
• Run make version-sync to copy the new version string into the code. You can use make check to verify that it's happy.