Bump mozprofile from 2.5.0 to 2.6.0 in /tools

Bumps [mozprofile](https://wiki.mozilla.org/Auto-tools/Projects/Mozbase) from 2.5.0 to 2.6.0.

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

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/tools/wptrunner/requirements_firefox.txt b/tools/wptrunner/requirements_firefox.txt
index b45ded7..ec05718 100644
--- a/tools/wptrunner/requirements_firefox.txt
+++ b/tools/wptrunner/requirements_firefox.txt
@@ -3,7 +3,7 @@
 mozdevice==4.1.1
 mozinstall==2.1.0
 mozleak==0.2
-mozprofile==2.5.0
+mozprofile==2.6.0
 mozrunner==8.2.1
 mozversion==2.3.0
 psutil==5.9.5