update rio-tiler and fix FastAPI issues

[vincentsarago]

closes #53 #52 #44

[codecov-commenter]

Codecov Report

Merging #54 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #54   +/-   ##
=======================================
  Coverage   95.39%   95.39%           
=======================================
  Files          22       22           
  Lines         933      933           
=======================================
  Hits          890      890           
  Misses         43       43           

Impacted Files	Coverage Δ
titiler/api/endpoints/cog.py	95.05% <100.00%> (ø)
titiler/api/endpoints/mosaic.py	94.18% <100.00%> (ø)
titiler/api/endpoints/stac.py	95.80% <100.00%> (ø)

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