build(deps): update prop-types requirement from ^15.6.2 to ^15.8.1 in /superset-frontend/plugins/legacy-plugin-chart-heatmap (#26488)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

superset-frontend/plugins/legacy-plugin-chart-heatmap/package.json

@@ -26,7 +26,7 @@
     "d3": "^3.5.17",
     "d3-svg-legend": "^1.x",
     "d3-tip": "^0.9.1",
-    "prop-types": "^15.6.2"
+    "prop-types": "^15.8.1"
   },
   "peerDependencies": {
     "@emotion/react": "^11.4.1",