Bump mozcrash from 2.1.0 to 2.2.0 in /tools

Bumps [mozcrash](https://wiki.mozilla.org/Auto-tools/Projects/Mozbase) from 2.1.0 to 2.2.0.

---
updated-dependencies:
- dependency-name: mozcrash
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

tools/wptrunner/requirements_firefox.txt

@@ -1,5 +1,5 @@
 marionette_driver==3.1.0
-mozcrash==2.1.0
+mozcrash==2.2.0
 mozdevice==4.1.0
 mozinstall==2.0.1
 mozleak==0.2