Update LICENSE

[clajo04]

The current LICENSE file does not support the GitHub License badge detecting the correct license of the project. Replacing the current license file with a copy of the license file from the Apache License 2.0 website will cause the GitHub License badge to correctly identify the license of jpype.

Running the licensee gem on the original repository resulted in the following output:

licensee detect
License: NOASSERTION
Matched files: LICENSE
LICENSE:
Content hash: c7acc21e9e359f098c0718f309ebd9d1fc15e355
License: NOASSERTION
Closest non-matching licenses:
Apache-2.0 similarity: 96.04%
ECL-2.0 similarity: 82.57%
OSL-3.0 similarity: 39.75%

Running the licensee gem on the updated repository results in the following output:

licensee detect
License: Apache-2.0
Matched files: LICENSE
LICENSE:
Content hash: bec905d850e7f5dc2e2db78a950d4a9db560a0b8
Confidence: 100.00%
Matcher: Licensee::Matchers::Exact
License: Apache-2.0

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.44%. Comparing base (653ccff) to head (98331a6).
Report is 160 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1211      +/-   ##
==========================================
+ Coverage   87.42%   87.44%   +0.01%     
==========================================
  Files         113      113              
  Lines       10238    10234       -4     
  Branches     4059     4059              
==========================================
- Hits         8951     8949       -2     
+ Misses        692      691       -1     
+ Partials      595      594       -1     

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