I18N EE dependecies actions file

This is one of many MRs opened in order to improve the overall
internationalisation of the GitLab codebase.

This commit only targets Vanilla JS files.

i18n documentation
https://docs.gitlab.com/ee/development/i18n/externalization.html

ee/app/assets/javascripts/dependencies/store/actions.js

@@ -4,6 +4,7 @@ import { FETCH_ERROR_MESSAGE } from './constants';
 import { isValidResponse } from './utils';
 import * as types from './mutation_types';
 import axios from '~/lib/utils/axios_utils';
+import { __ } from '~/locale';
 
 export const setDependenciesEndpoint = ({ commit }, endpoint) =>
   commit(types.SET_DEPENDENCIES_ENDPOINT, endpoint);
@@ -41,7 +42,7 @@ export const fetchDependencies = ({ state, dispatch }, params = {}) => {
       if (isValidResponse(response)) {
         dispatch('receiveDependenciesSuccess', response);
       } else {
-        throw new Error('Invalid server response');
+        throw new Error(__('Invalid server response'));
       }
     })
     .catch(error => {

locale/gitlab.pot

@@ -7194,6 +7194,9 @@ msgstr ""
 msgid "Invalid repository path"
 msgstr ""
 
+msgid "Invalid server response"
+msgstr ""
+
 msgid "Invalid two-factor code."
 msgstr ""