Describe the bug:
Small secondary text fails AAA colour contrast

Kibana/Elasticsearch Stack version:
v 7.16.1

Original install method (e.g. download page, yum, from source, etc.):
Eden

Functional Area (e.g. Endpoint management, timelines, resolver, etc.):
Detect > Exceptions (probably all Kibana

Current behavior:
Text colour is set to #69717d on a background of #fefeff which fails AAA

See: https://colourcontrast.cc/fefeff/69717d

Expected behavior:

Changing the text colour to #000000 visually makes the design clearer and also passes AAA increasing our accessibility score overall. See before and after screenshots below.

If we're going to put contention on the page we should make sure everyone can read it.

Screenshots (if relevant):

Before

After