Bump rollup-plugin-typescript2 from 0.25.2 to 0.26.0

Bumps [rollup-plugin-typescript2](https://github.com/ezolenko/rollup-plugin-typescript2) from 0.25.2 to 0.26.0.
- [Release notes](https://github.com/ezolenko/rollup-plugin-typescript2/releases)
- [Commits](ezolenko/rollup-plugin-typescript2@0.25.2...0.26.0)

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

package.json

@@ -56,7 +56,7 @@
     "mocha": "^7.1.1",
     "rollup": "^1.26.5",
     "rollup-plugin-node-resolve": "^5.2.0",
-    "rollup-plugin-typescript2": "^0.25.2",
+    "rollup-plugin-typescript2": "^0.26.0",
     "sinon": "^7.5.0",
     "tslint-config-prettier": "^1.18.0",
     "typescript": "^3.7.2",