fixing gantt chart, new driver version was returning {low,high} numbers

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 37.51%. Comparing base (20e4e0a) to head (825b1e9). Report is 104 commits behind head on develop.

Files	Patch %	Lines
src/extensions/advancedcharts/chart/gantt/Utils.ts	0.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #804 +/- ## =========================================== - Coverage 39.07% 37.51% -1.57% =========================================== Files 208 216 +8 Lines 8721 9136 +415 Branches 2598 2699 +101 =========================================== + Hits 3408 3427 +19 - Misses 5252 5652 +400 + Partials 61 57 -4 ```

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