Bump Plotly.js to 2.12.0

Author: nicolaskruchten

Diff for: CHANGELOG.md

@@ -2,11 +2,16 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-##  TBD
+##  UNRELEASED
 
 ### Fixed
   - Improve support for type checking by bypassing lazy-loading when type checking.
 
+### Updated
+  - Updated Plotly.js to from version 2.11.1 to version 2.12.0. See the [plotly.js CHANGELOG](https://github.com/plotly/plotly.js/blob/master/CHANGELOG.md#2120----2022-05-02) for more information. Notable changes include:
+    - Add `minor` ticks to cartesian axes
+    - Add `griddash` option to most axes
+
 ##  [5.7.0] - 2022-04-05
 
 ### Added

Diff for: packages/javascript/jupyterlab-plotly/package-lock.json

@@ -65,7 +65,7 @@
     "@lumino/messaging": "^1.2.3",
     "@lumino/widgets": "^1.8.1",
     "lodash": "^4.17.4",
-    "plotly.js": "^2.11.1"
+    "plotly.js": "^2.12.0"
   },
   "jupyterlab": {
     "extension": "lib/jupyterlab-plugin",