convert to base64 before export as CORS restrictions would break the …

…export of linked images (#1003)

package.json

@@ -89,7 +89,6 @@
     "browser-fs-access": "0.35.0",
     "core-js": "3.38.1",
     "elix": "15.0.1",
-    "html2canvas": "1.4.1",
     "i18next": "23.15.1",
     "jspdf": "2.5.1",
     "pathseg": "1.2.1",
@@ -108,8 +107,8 @@
     "@rollup/plugin-dynamic-import-vars": "2.1.2",
     "@rollup/plugin-node-resolve": "15.2.3",
     "@rollup/plugin-replace": "5.0.7",
-    "@rollup/plugin-url": "8.0.2",
     "@rollup/plugin-terser": "0.4.4",
+    "@rollup/plugin-url": "8.0.2",
     "@web/dev-server": "0.4.6",
     "@web/dev-server-rollup": "0.6.4",
     "babel-plugin-istanbul": "7.0.0",
@@ -140,6 +139,6 @@
     "start-server-and-test": "2.0.8"
   },
   "optionalDependencies": {
-     "@rollup/rollup-linux-x64-gnu": "4.21.3"  
+    "@rollup/rollup-linux-x64-gnu": "4.21.3"
   }
 }