feat: build with trunk version of wordpress-seo packages, regenerated…

… language files, bugfix within SnippetPreviewService.php

.gitmodules

@@ -1,4 +1,4 @@
 [submodule "grunt/submodules/wordpress-seo"]
 	path = grunt/submodules/wordpress-seo
 	url = https://github.com/Yoast/wordpress-seo.git
-	branch = releasing-yoastseo
+	branch = trunk

Classes/Service/SnippetPreviewService.php

@@ -46,7 +46,7 @@ public function buildSnippetPreview(
                 'synonyms' => (string)($currentData['tx_yoastseo_focuskeyword_synonyms'] ?? ''),
             ],
             'labels' => $this->localeService->getLabels(),
-            'translations' => $this->localeService->getTranslations(),
+            'translations' => [$this->localeService->getTranslations()],
         ];
         $jsonConfigUtility = GeneralUtility::makeInstance(JsonConfigUtility::class);
         $jsonConfigUtility->addConfig(array_merge($config, $additionalConfiguration));