Update dependencies and xtermjs

package.json

@@ -14,20 +14,20 @@
   "dependencies": {
     "@fortawesome/fontawesome-free": "^5.14.0",
     "bootstrap-sass": "^3.4.1",
-    "gulp": "^4.0.0",
-    "gulp-autoprefixer": "^5.0.0",
+    "gulp": "^4.0.2",
+    "gulp-autoprefixer": "^7.0.1",
     "gulp-concat": "^2.6.1",
     "gulp-cssnano": "^2.1.3",
-    "gulp-ejs": "^3.3.0",
-    "gulp-sass": "^4.0.2",
+    "gulp-ejs": "^5.1.0",
+    "gulp-sass": "^4.1.0",
     "gulp-serve": "^1.4.0",
     "gulp-sourcemaps": "^2.6.5",
     "monaco-editor": "^0.20.0",
-    "rimraf": "^2.6.2",
-    "xterm": "^4.8.1",
+    "rimraf": "^3.0.2",
+    "xterm": "^4.9.0",
     "xterm-addon-attach": "^0.6.0",
     "xterm-addon-fit": "^0.4.0",
-    "yargs": "^11.0.0"
+    "yargs": "^16.0.3"
   },
   "eslintConfig": {
     "env": {