Bump ses from 1.10.0 to 1.12.0 in /plugin

Bumps [ses](https://github.com/endojs/endo/tree/HEAD/packages/ses) from 1.10.0 to 1.12.0.
- [Release notes](https://github.com/endojs/endo/releases)
- [Changelog](https://github.com/endojs/endo/blob/master/packages/ses/CHANGELOG.md)
- [Commits](https://github.com/endojs/endo/commits/ses@1.12.0/packages/ses)

---
updated-dependencies:
- dependency-name: ses
  dependency-version: 1.12.0
  dependency-type: direct:production
...

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

plugin/package.json

@@ -10,7 +10,7 @@
     "node-forge": "^1.3.1",
     "pinyin-match": "^1.2.6",
     "png2icons": "^2.0.1",
-    "ses": "^1.10.0",
+    "ses": "^1.12.0",
     "sm-crypto": "^0.3.13",
     "tree-kill": "^1.2.2"
   }