Bump jest-webextension-mock from 3.7.22 to 3.8.7

Bumps [jest-webextension-mock](https://github.com/clarkbw/jest-webextension-mock) from 3.7.22 to 3.8.7.
- [Release notes](https://github.com/clarkbw/jest-webextension-mock/releases)
- [Commits](https://github.com/clarkbw/jest-webextension-mock/compare/v3.7.22...v3.8.7)

---
updated-dependencies:
- dependency-name: jest-webextension-mock
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -46,7 +46,7 @@
     "geckodriver": "^3.2.0",
     "jasmine-fail-fast": "^2.0.1",
     "jest": "^25.5.4",
-    "jest-webextension-mock": "^3.7.22",
+    "jest-webextension-mock": "^3.8.7",
     "marked": "^4.2.2",
     "prettier": "^2.7.1",
     "selenium-webdriver": "^4.6.0",

yarn.lock

@@ -4584,10 +4584,10 @@ jest-watcher@^25.5.0:
     jest-util "^25.5.0"
     string-length "^3.1.0"
 
-jest-webextension-mock@^3.7.22:
-  version "3.7.22"
-  resolved "https://registry.yarnpkg.com/jest-webextension-mock/-/jest-webextension-mock-3.7.22.tgz#2f9fee625b06d759bb62decbfccbd00384dfbbb9"
-  integrity sha512-ai0S49FU9FjUqtXOpkVj26WGc3Lsh6lBPkQABKtKoLUoR60Z42XBBFyNykaZpWRRfIPxprrahLsedPNAVDkJ3w==
+jest-webextension-mock@^3.8.7:
+  version "3.8.7"
+  resolved "https://registry.yarnpkg.com/jest-webextension-mock/-/jest-webextension-mock-3.8.7.tgz#ff7777e307c7782e9d283d09c5e116d29100be0f"
+  integrity sha512-hLLqY24VqebfzKE21oRXVJRpLwxF6VKzTJZdGSpRqtUmnywmopP/jBZsegbtxH50rhn9Ql5Zioivkt35cMHZJg==
 
 jest-worker@^25.5.0:
   version "25.5.0"