Upgrade to index provider v0.9.1

[hannahhoward]

Goals

Required for filecoin-project/boost#951

Implementation

• update index provider
• several deps got updated
• actually had to make a change in a filestore test cause of I guess an update to go-ipfs-files?

[codecov-commenter]

Codecov Report

Merging #766 (495bbb8) into master (2ac8284) will decrease coverage by 0.17%.
The diff coverage is 40.75%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #766      +/-   ##
==========================================
- Coverage   57.97%   57.81%   -0.16%     
==========================================
  Files          66       66              
  Lines        5540     5564      +24     
==========================================
+ Hits         3211     3216       +5     
- Misses       1979     2005      +26     
+ Partials      350      343       -7     

Impacted Files	Coverage Δ
retrievalmarket/types.go	58.03% <ø> (ø)
storagemarket/impl/client.go	21.24% <ø> (ø)
storagemarket/impl/clientutils/clientutils.go	40.55% <ø> (ø)
storagemarket/impl/provider.go	26.50% <0.00%> (ø)
storagemarket/impl/provider_environments.go	10.38% <0.00%> (ø)
...oragemarket/impl/providerstates/provider_states.go	83.60% <ø> (ø)
storagemarket/impl/providerutils/providerutils.go	94.29% <ø> (ø)
storagemarket/types.go	85.37% <ø> (ø)
retrievalmarket/impl/provider.go	64.88% <30.44%> (-3.44%)	⬇️
...market/impl/requestvalidation/requestvalidation.go	80.19% <52.18%> (-7.90%)	⬇️
... and 6 more