Support recent versions of DeckGL

[philippjfr]

Fixes #1380

[codecov]

Codecov Report

Merging #1443 into master will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master    #1443   +/-   ##
=======================================
  Coverage   87.90%   87.90%           
=======================================
  Files         135      135           
  Lines       14896    14896           
=======================================
  Hits        13095    13095           
  Misses       1801     1801           

Impacted Files	Coverage Δ
panel/models/deckgl.py	100.00% <ø> (ø)
panel/pane/deckgl.py	73.52% <0.00%> (ø)

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