api/projects: support plain strings for the some query fields

CHANGELOG.md

@@ -19,6 +19,9 @@ been added.
 
   * The `api::projects::environments::Environment` endpoint uses the correct
     path now.
+  * The `api::projects::members::ProjectMembers` and
+    `api::projects::repository::Branches` endpoints now accepts plain strings
+    for their `query` fields.
 
 ## Changes
 

src/api/projects/members/members.rs

@@ -13,6 +13,7 @@ use crate::api::endpoint_prelude::*;
 
 /// Query a members of a project.
 #[derive(Debug, Builder)]
+#[builder(setter(strip_option))]
 pub struct ProjectMembers<'a> {
     /// The project to query for membership.
     #[builder(setter(into))]

src/api/projects/repository/branches/branches.rs

@@ -11,6 +11,7 @@ use crate::api::endpoint_prelude::*;
 
 /// Query for a specific branch in a project.
 #[derive(Debug, Builder)]
+#[builder(setter(strip_option))]
 pub struct Branches<'a> {
     /// The project to get a branch from.
     #[builder(setter(into))]