Pin GDAL_jll dependency

Recent GDAL_jll release is broken on Windows:

JuliaPackaging/Yggdrasil#8781

Project.toml

@@ -19,6 +19,7 @@ Distributed = "8ba89e20-285c-5b6f-9357-94700520ee1b"
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
 FLoops = "cc61a311-1640-44b5-9fba-1b764f453329"
 FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549"
+GDAL_jll = "a7073274-a066-55f0-b90d-d619367d196c"
 GeoDataFrames = "62cb38b5-d8d2-4862-a48e-6a340996859f"
 GeoFormatTypes = "68eda718-8dee-11e9-39e7-89f7f65f511f"
 GeoInterface = "cf35fbd7-0cd7-5166-be24-54bfbe79505f"