Update SingleFile config for current version

They got updated upstream and the backwards-compat code
does not run for the way we execute singlefile

See https://github.com/gildas-lormeau/SingleFile/issues/1021
Addresses https://github.com/zotero/zotero-connectors/issues/398

chrome/content/zotero/xpcom/singlefile.js

@@ -32,7 +32,9 @@ Zotero.SingleFile = Object.assign(Zotero.SingleFile || {}, {
 		removeUnusedFonts: true,
 		removeFrames: true,
 		removeImports: true,
-		removeScripts: true,
+		blockScripts: true,
+		blockVideos: true,
+		blockAudios: true,
 		compressHTML: true,
 		compressCSS: false,
 		loadDeferredImages: true,
@@ -58,8 +60,6 @@ Zotero.SingleFile = Object.assign(Zotero.SingleFile || {}, {
 		progressBarEnabled: true,
 		maxResourceSizeEnabled: false,
 		maxResourceSize: 10,
-		removeAudioSrc: true,
-		removeVideoSrc: true,
 		displayInfobar: true,
 		displayStats: false,
 		backgroundSave: true,