reduce OrderedCollections compat

Author: matthijscox

Project.toml

@@ -16,7 +16,7 @@ Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
 CodecZlib = "0.5, 0.6, 0.7"
 Dates = "1"
 HDF5 = "0.16, 0.17"
-OrderedCollections = "1.8.1"
+OrderedCollections = "1"
 PooledArrays = "1.4.3"
 StringEncodings = "0.3.7"
 Tables = "1.12.1"