chore(deps): bump xvfbwrapper from 0.2.18 to 0.2.20 in /tests-qa

Bumps [xvfbwrapper](https://github.com/cgoldberg/xvfbwrapper) from 0.2.18 to 0.2.20.
- [Commits](cgoldberg/xvfbwrapper@0.2.18...0.2.20)

---
updated-dependencies:
- dependency-name: xvfbwrapper
  dependency-version: 0.2.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

tests-qa/requirements.txt

@@ -1,7 +1,7 @@
 robotframework==7.4.1
 robotframework-seleniumlibrary==6.8.0
 robotframework-debuglibrary==2.5.0
-xvfbwrapper==0.2.18
+xvfbwrapper==0.2.20
 robotframework-xvfb==1.2.2
 Selenium==4.40.0
 robotframework-dependencylibrary==4.0.1