Add missing CACHE INTERNAL directive to sanitizer

Change test behaviour for better supporting FetchContent

Added a test case to test url string conversion

Potential fix for libcpr#450

Version bump to cpr 1.5.1

Added a test case for libcpr#400

Merge pull request libcpr#370 from whoshuu/cookie_encoding

Added an option to disable cookie encoding libcpr#369

Update version to 1.3.0

Closes libcpr#175

Remove trailing whitespace

Update requirements and remove disclaimer