Bump @types/offscreencanvas from 2019.6.4 to 2019.7.0

Bumps [@types/offscreencanvas](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/offscreencanvas) from 2019.6.4 to 2019.7.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/offscreencanvas)

---
updated-dependencies:
- dependency-name: "@types/offscreencanvas"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package-lock.json

@@ -2216,9 +2216,9 @@
       "dev": true
     },
     "node_modules/@types/offscreencanvas": {
-      "version": "2019.6.4",
+      "version": "2019.7.0",
-      "resolved": "https://registry.npmjs.org/@types/offscreencanvas/-/offscreencanvas-2019.6.4.tgz",
+      "resolved": "https://registry.npmjs.org/@types/offscreencanvas/-/offscreencanvas-2019.7.0.tgz",
-      "integrity": "sha512-u8SAgdZ8ROtkTF+mfZGOscl0or6BSj9A4g37e6nvxDc+YB/oDut0wHkK2PBBiC2bNR8TS0CPV+1gAk4fNisr1Q==",
+      "integrity": "sha512-PGcyveRIpL1XIqK8eBsmRBt76eFgtzuPiSTyKHZxnGemp2yzGzWpjYKAfK3wIMiU7eH+851yEpiuP8JZerTmWg==",
       "dev": true
     },
     "node_modules/@types/pbf": {
@@ -11867,9 +11867,9 @@
       "dev": true
     },
     "@types/offscreencanvas": {
-      "version": "2019.6.4",
+      "version": "2019.7.0",
-      "resolved": "https://registry.npmjs.org/@types/offscreencanvas/-/offscreencanvas-2019.6.4.tgz",
+      "resolved": "https://registry.npmjs.org/@types/offscreencanvas/-/offscreencanvas-2019.7.0.tgz",
-      "integrity": "sha512-u8SAgdZ8ROtkTF+mfZGOscl0or6BSj9A4g37e6nvxDc+YB/oDut0wHkK2PBBiC2bNR8TS0CPV+1gAk4fNisr1Q==",
+      "integrity": "sha512-PGcyveRIpL1XIqK8eBsmRBt76eFgtzuPiSTyKHZxnGemp2yzGzWpjYKAfK3wIMiU7eH+851yEpiuP8JZerTmWg==",
       "dev": true
     },
     "@types/pbf": {