fix: LowerCaseQueryStringMiddleware should not truncate query parameters

[jthetzel]

Small fix where LowerCaseQueryStringMiddleware causes query parameter error with pre-signed urls. Co-authoring with @jackharrhy . Closes #678 .

[vincentsarago]

@jthetzel thanks for the PR.

Is there a possible test we could add?

[jackharrhy]

@vincentsarago tests now exist

before:

>       assert response.json() == {"url": [url]}
E       AssertionError: assert {'url': ['htt...=geospatial']} == {'url': ['htt...anet=better']}
E         Differing items:
E         {'url': ['https://developmentseed.org?solutions=geospatial']} != {'url': ['https://developmentseed.org?solutions=geospatial&planet=better']}
E         Use -v to get more diff

after:
✔️ test pass, the second query param is not trimmed

[jthetzel]

This is ready for review. Thanks @vincentsarago !

[vincentsarago]

Thanks @jackharrhy, @jthetzel
could one of you add a line in the changelog 🙏

[jackharrhy]

added a line in the changelog @vincentsarago :)