Uninstall twine before installing it in CI (#37415)

Since we are using different Python versions for pipx now, it can
be that twine is not usable as it was installed with different
python version. Uninstalling twine before installing should help.

.github/workflows/ci.yml

@@ -871,7 +871,9 @@ jobs:
       - name: "Prepare airflow package: wheel"
         run: breeze release-management prepare-airflow-package --version-suffix-for-pypi dev0
       - name: "Verify wheel packages with twine"
-        run: pipx install twine --force && twine check dist/*.whl
+        run: |
+          pipx uninstall twine || true
+          pipx install twine && twine check dist/*.whl
       - name: "Test providers issue generation automatically"
         run: >
           breeze release-management generate-issue-content-providers
@@ -931,7 +933,9 @@ jobs:
           breeze release-management prepare-airflow-package
           --version-suffix-for-pypi dev0 --package-format sdist
       - name: "Verify sdist packages with twine"
-        run: pipx install twine --force && twine check dist/*.tar.gz
+        run: |
+          pipx uninstall twine || true
+          pipx install twine && twine check dist/*.whl
       - name: "Generate source constraints from CI image"
         shell: bash
         run: >