Update gulp setup

- use dart sass instead of deprecated node-sass
- update bootstrap
- update node-forge
- use npm run scripts instead of directly calling node_modules/.bin/gulp

README.md

@@ -26,9 +26,9 @@ for the signing operations. The instructions below have been tested on Debian
 
     ```
     cd poc-browser-csr-generation
-    npm install --user gulp-cli
+    npm install --no-save --user gulp-cli
     npm install
-    ./node_modules/.bin/gulp
+    npm run build
     ```
 
 3. Setup the example CA and a server certificate and key
@@ -56,7 +56,7 @@ for the signing operations. The instructions below have been tested on Debian
    the `src` directory:
 
     ```
-    gulp watch
+    npm run watch
     ```
 
 ## Translations

gulpfile.js

@@ -3,11 +3,10 @@ const csso = require('gulp-csso');
 const del = require('delete');
 const rename = require('gulp-rename');
 const replace = require('gulp-replace');
-const sass = require('gulp-sass');
 const sourcemaps = require('gulp-sourcemaps');
 const uglify = require('gulp-uglify');
 
-sass.compiler = require('node-sass');
+const sass = require('gulp-sass')(require('sass'));
 
 function clean(cb) {
     del(['./public/js/*.js', './public/css/*.css'], cb);

package.json

@@ -16,18 +16,22 @@
   "devDependencies": {
     "bootstrap": "^4.5.3",
     "delete": "^1.1.0",
-    "gulp": "^4.0.2",
-    "gulp-csso": "^4.0.1",
+    "gulp": "^4.0.0",
+    "gulp-csso": "^4.0.0",
     "gulp-rename": "^2.0.0",
     "gulp-replace": "^1.0.0",
-    "gulp-sass": "^4.1.0",
+    "gulp-sass": "^5.1.0",
     "gulp-sourcemaps": "^3.0.0",
-    "gulp-sri-hash": "^2.2.1",
-    "gulp-uglify": "^3.0.2",
-    "i18next-client": "^1.11.4",
-    "jquery": "^3.5.1",
-    "node-forge": "^0.10.0",
-    "popper.js": "^1.16.1"
+    "gulp-sri-hash": "^2.2.0",
+    "gulp-uglify": "^3.0.0",
+    "i18next-client": "^1.11.0",
+    "jquery": "^3.5.0",
+    "node-forge": "^1.3.0",
+    "popper.js": "^1.16.0",
+    "sass": "^1.56.0"
   },
-  "dependencies": {}
+  "scripts": {
+    "build": "gulp",
+    "watch": "gulp watch"
+  }
 }