Update reviewers/approvers to include Danny/Felix

[adchia]

What this PR does / why we need it:
Adding Felix / me to the OWNERS file so we are assigned reviews / have ability to approve PRs

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

NONE

[codecov-commenter]

Codecov Report

Merging #1833 (4430f57) into master (fc448dc) will decrease coverage by 0.30%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1833      +/-   ##
==========================================
- Coverage   84.60%   84.30%   -0.31%     
==========================================
  Files          94       94              
  Lines        6989     7033      +44     
==========================================
+ Hits         5913     5929      +16     
- Misses       1076     1104      +28     

Flag	Coverage Δ
integrationtests	84.23% <ø> (-0.31%)	⬇️
unittests	63.23% <ø> (-0.17%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
sdk/python/feast/errors.py	67.96% <0.00%> (-1.43%)	⬇️
sdk/python/feast/cli.py	42.58% <0.00%> (-1.38%)	⬇️
sdk/python/feast/registry.py	78.30% <0.00%> (-1.00%)	⬇️
sdk/python/feast/feature_store.py	92.66% <0.00%> (-0.49%)	⬇️

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[achals]

/lgtm

[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: achals, adchia

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [achals]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment