[ci] Enable FOSSA scans again

[vdarulis]

This PR:

1. updates fossa to a more recent version and regenerates .fossa.yml
2. disables ANSI output, so buildkite logs are not full of junk
3. incorporates fix from [fossa] Prevent unresolved golang deps from failing analysis. #1932 so builds stop failing

[codecov]

Codecov Report

Merging #1915 into master will decrease coverage by <.1%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #1915     +/-   ##
=========================================
- Coverage    63.4%    63.4%   -0.1%     
=========================================
  Files        1114     1114             
  Lines      104856   104856             
=========================================
- Hits        66531    66499     -32     
- Misses      34088    34110     +22     
- Partials     4237     4247     +10

Flag	Coverage Δ
#aggregator	79.8% <ø> (-0.1%)	⬇️
#cluster	56.2% <ø> (-0.1%)	⬇️
#collector	63.7% <ø> (ø)	⬆️
#dbnode	64.8% <ø> (-0.1%)	⬇️
#m3em	59.6% <ø> (ø)	⬆️
#m3ninx	61.1% <ø> (-0.1%)	⬇️
#m3nsch	51.1% <ø> (ø)	⬆️
#metrics	17.7% <ø> (ø)	⬆️
#msg	74.7% <ø> (-0.2%)	⬇️
#query	68.1% <ø> (ø)	⬆️
#x	75.3% <ø> (ø)	⬆️

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[schallert]

LGTM

[robskillington]

Nice work @vdarulis