Bump canvg from 3.0.2 to 3.0.6

Bumps [canvg](https://github.com/canvg/canvg) from 3.0.2 to 3.0.6.
- [Release notes](https://github.com/canvg/canvg/releases)
- [Changelog](https://github.com/canvg/canvg/blob/master/CHANGELOG.md)
- [Commits](https://github.com/canvg/canvg/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package.json

@@ -116,7 +116,7 @@
     "@mapbox/vector-tile": "1.3.1",
     "@supermap/iclient-common": "file:src/common",
     "@turf/turf": "5.1.6",
-    "canvg": "3.0.2",
+    "canvg": "3.0.6",
     "echarts": "4.5.0",
     "elasticsearch": "16.5.0",
     "fetch-ie8": "1.5.0",