correct http version

Author: Swatinem

sentry-tower/Cargo.toml

@@ -17,7 +17,7 @@ http = []
 [dependencies]
 tower-layer = "0.3"
 tower-service = "0.3"
-http = { version = "", optional = true }
+http = { version = "0.2.6", optional = true }
 sentry-core = { version = "0.23.0", path = "../sentry-core", default-features = false, features = ["client"] }
 
 [dev-dependencies]