Bug Fixes + Improvements

[ajinabraham]

Describe the Pull Request

* Replace Android test APK
* Added tests for Library analysis from binary (scan_library route)
* iOS merge findings from swift and objective c rules with same rule identifier. Fixes #2287 
* iOS Binary analysis, sort regex matches. Fixes #2252
* Framework dylibs with no extensions to skip PIE checks. Fixes #2307
* Select correct network_security config. Fixes #2049
* Android Manifest Analysis added support for detecting task hijacking (StrandHogg 1.0 and StrandHogg 2.0) . Fixes #2124
* Added new manifest analysis rule to warn on apps targeting older Android OS
* Updated severity of findings
* UI improvement for AppSec dashboard to show a loader
* UI changes in Static Analysis to collapse large no of files in API and Code Analysis for better real estate
* Improved certificate file analysis for android, jar, aar, and ios
* MobSF version Bump

Checklist for PR

• [x] Run MobSF unit tests and lint tox -e lint,test
• [x] Tested Working on Linux, Mac, Windows, and Docker
• [x] Add unit test for any new Web API (Refer: StaticAnalyzer/tests.py)
• [x] Make sure tests are passing on your PR

Additional Comments (if any)

DESCRIBE HERE

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