refactor: unify flow branches usage

src/git_flow/command/release.py

@@ -13,10 +13,9 @@ def release(group: Optional[str] = None):
     ensure_initialized()
 
     branch = ensure_right_branch()
-    envs = flowconfig["flow.branches"].split(",")
     env, _ = get_branch_env_and_type(branch)
 
-    if env == envs[-1]:
+    if env == environments[-1]:
         raise GitFlowError(
             "No se puede hacer release de una rama en el ultimo entorno."
         )
@@ -25,7 +24,7 @@ def release(group: Optional[str] = None):
 
     ensure_clean_worktree(has_remote)
 
-    next_env = envs[envs.index(env) + 1]
+    next_env = environments[environments.index(env) + 1]
     next_branch = (
         branch.replace(f"/{env}/", f"/{next_env}/")
         if branch.startswith("release/")