fix/users: remove query for usageStatistics

cmd/src/users.go

@@ -60,10 +60,6 @@ fragment UserFields on User {
         email
 		verified
     }
-    usageStatistics {
-        lastActiveTime
-        lastActiveCodeHostIntegrationTime
-    }
     url
 }
 `
@@ -76,21 +72,15 @@ type User struct {
 	Organizations struct {
 		Nodes []Org
 	}
-	Emails          []UserEmail
-	UsageStatistics UserUsageStatistics
-	URL             string
+	Emails []UserEmail
+	URL    string
 }
 
 type UserEmail struct {
 	Email    string
 	Verified bool
 }
 
-type UserUsageStatistics struct {
-	LastActiveTime                    string
-	LastActiveCodeHostIntegrationTime string
-}
-
 type SiteUser struct {
 	ID           string
 	Username     string

internal/users/admin.go

@@ -252,6 +252,7 @@ func (c *Client) GraphQL(token, query string, variables map[string]any, target a
 	if err != nil {
 		return err
 	}
+	req.Header.Set("Content-Type", "application/json")
 	if token != "" {
 		req.Header.Set("Authorization", fmt.Sprintf("token %s", token))
 	} else {