CI: skip impls without lxml wheels

Signed-off-by: Michał Górny <[email protected]>

Author: mgorny

.github/workflows/ci.yaml

@@ -4,7 +4,7 @@ jobs:
   build:
     strategy:
       matrix:
-        python-version: ["3.11", "3.12", "3.13", "3.14-dev", "pypy-3.11"]
+        python-version: ["3.11", "3.12", "3.13"]
       fail-fast: false
     runs-on: ubuntu-22.04
     steps: