chore: remove upperbound of lz4_flex dependency (#314)

Author: gruebel

opentelemetry-exporter-geneva/geneva-uploader/Cargo.toml

@@ -19,7 +19,7 @@ chrono = "0.4"
 url = "2.2"
 md5 = "0.7.0"
 hex = "0.4"
-lz4_flex = { version = ">=0.11.0, <0.11.4", features = ["safe-encode"], default-features = false }
+lz4_flex = { version = "0.11", features = ["safe-encode"], default-features = false }
 
 [features]
 self_signed_certs = [] # Empty by default for security