update env_logger 0.8 -> 0.9

RCasatta · RCasatta · commit c14b0494242f · 2022-10-25T15:40:36.000+02:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -16,7 +16,7 @@ log = "0.4"
 which = "4.2.5"
 
 [dev-dependencies]
-env_logger = "0.8"
+env_logger = "0.9"
 
 [build-dependencies]
 bitcoin_hashes = "0.11"
