fix: Increase display_color column length to 7 in the generic OIDC providers table. (#105)

Author: KyleDerZweite

generic-oidc-providers/database/migrations/001_create_generic_oidc_providers_table.php

@@ -14,7 +14,7 @@ public function up(): void
             $table->boolean('link_missing_users')->default(false);
             $table->string('display_name');
             $table->string('display_icon')->nullable();
-            $table->string('display_color', 6)->nullable();
+            $table->string('display_color', 7)->nullable();
             $table->string('base_url');
             $table->string('client_id');
             $table->text('client_secret');