Add Apache Superset fingerprints

[mkienow-r7]

Description

Adds 2 Apache Superset fingerprints.

Notes

Fingerprinted Apache Superset version 2.1.0.

• favicon.png

  $ file favicon.png
  favicon.png: PNG image data, 260 x 260, 8-bit/color RGBA, non-interlaced
  $ md5 favicon.png
  MD5 (favicon.png) = 0629ce6bd8a86ff6b5dbb2a24c040849

Motivation and Context

Improved coverage

How Has This Been Tested?

• bundle exec ./bin/recog_verify xml/favicons.xml xml/html_title.xml
• rake tests

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• [x] I have updated the documentation accordingly (or changes are not required).
• [x] I have added tests to cover my changes (or new tests are not required).
• [x] All new and existing tests passed.