Bootstrap version update and progressbar fix.

Yellow fee text is now white.

frontend/package.json

@@ -41,7 +41,7 @@
     "@angular/router": "~9.1.0",
     "@ng-bootstrap/ng-bootstrap": "^5.3.0",
     "@types/qrcode": "^1.3.4",
-    "bootstrap": "^4.4.1",
+    "bootstrap": "4.5.0",
     "chartist": "^0.11.4",
     "clipboard": "^2.0.4",
     "ngx-infinite-scroll": "^8.0.1",
@@ -72,4 +72,4 @@
     "tslint": "~6.1.0",
     "typescript": "~3.6.4"
   }
-}
+}