Update bootstrap

Author: thknieling

package-lock.json

@@ -10,7 +10,7 @@
     "@babel/polyfill": "^7.11.5",
     "@vue/composition-api": "^1.3.0",
     "axios": "^0.24.0",
-    "bootstrap": "^4.5.3",
+    "bootstrap": "^4.6.1",
     "bootstrap-vue": "^2.21.2",
     "chart.js": "^3.6.0",
     "jquery": "^3.6.0",