Auto merge of #28058 - ghostd:fix-boostrap-ubuntu-2010, r=jdm

Fix bootstrap error on Ubuntu 20.10

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- [ ] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [x] These changes fix #28045

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python/servo/bootstrap.py

@@ -374,7 +374,7 @@ def get_linux_distribution():
             raise Exception('unsupported version of %s: %s' % (distrib, version))
         distrib, version = 'Ubuntu', base_version
     elif distrib.lower() == 'ubuntu':
-        if version > '20.04':
+        if version > '20.10':
             raise Exception('unsupported version of %s: %s' % (distrib, version))
     # Fixme: we should allow checked/supported versions only
     elif distrib.lower() not in [