Do not specify exact versions

Cargo.toml

@@ -16,7 +16,7 @@ colored = "2.0"
 indicatif = "0.16"
 statistical = "1.0"
 atty = "0.2"
-csv = "1.1.6"
+csv = "1.1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 rust_decimal = "1.15"
@@ -36,8 +36,8 @@ features = ["suggestions", "color", "wrap_help"]
 [dev-dependencies]
 approx = "0.5"
 assert_cmd = "2.0"
-predicates = "2.0.1"
-tempfile = "3.2.0"
+predicates = "2.0"
+tempfile = "3.2"
 
 [build-dependencies]
 clap = "2"