feat: Implement rest API endpoint to update connection

packages/backend/src/controllers/api/v1/connections/update-connection.js

@@ -0,0 +1,19 @@
+import { renderObject } from '../../../../helpers/renderer.js';
+
+export default async (request, response) => {
+  let connection = await request.currentUser
+    .$relatedQuery('connections')
+    .findOne({
+      id: request.params.connectionId,
+    })
+    .throwIfNotFound();
+
+  connection = await connection.update(connectionParams(request));
+
+  renderObject(response, connection);
+};
+
+const connectionParams = (request) => {
+  const { formattedData, appAuthClientId } = request.body;
+  return { formattedData, appAuthClientId };
+};