Replace get_env with compile_env in module body

Author: uzairaslam196

lib/tesla/middleware/logger.ex

@@ -182,7 +182,10 @@ defmodule Tesla.Middleware.Logger do
 
   alias Tesla.Middleware.Logger.Formatter
 
-  @config Application.get_env(:tesla, __MODULE__, [])
+  @config if function_exported?(Application, :compile_env, 3),
+    do: Application.compile_env(:tesla, __MODULE__, []), else:
+    Application.get_env(:tesla, __MODULE__, [])
+
   @format Formatter.compile(@config[:format])
 
   @type log_level :: :info | :warn | :error

lib/tesla/middleware/telemetry.ex

@@ -80,9 +80,10 @@ if Code.ensure_loaded?(:telemetry) do
     ```
     """
 
-    @disable_legacy_event Application.get_env(:tesla, Tesla.Middleware.Telemetry,
-                            disable_legacy_event: false
-                          )[:disable_legacy_event]
+    @disable_legacy_event (if function_exported?(Application, :compile_env, 3),
+    do: Application.compile_env(:tesla, __MODULE__), else:
+    Application.get_env(:tesla, __MODULE__, []))[:disable_legacy_event] || false
+
 
     @behaviour Tesla.Middleware