generate-sri.js: remove RegExp call; sed already does this.

Author: XhmikosR

build/generate-sri.js

@@ -55,6 +55,6 @@ files.forEach((file) => {
 
     console.log(`${file.configPropertyName}: ${integrity}`)
 
-    sh.sed('-i', new RegExp(`(\\s${file.configPropertyName}:\\s+"|')(\\S+)("|')`), '$1' + integrity + '$3', configFile)
+    sh.sed('-i', `(\\s${file.configPropertyName}:\\s+"|')(\\S+)("|')`, '$1' + integrity + '$3', configFile)
   })
 })