CI: Install adjusted antlr4-tools that uses search.maven.org

The intention is to prevent being flagged or rejected as a bot by
`central.sonatype.com`.

Author: amotl

.github/workflows/python.yml

@@ -59,6 +59,11 @@ jobs:
     - name: Set up project
       run: |
         uv sync --all-groups
+        # TODO: Remove again after upstream patch was merged and released.
+        # https://github.com/crate/cratedb-sqlparse/issues/170
+        # https://github.com/antlr/antlr4-tools/issues/22
+        # https://github.com/antlr/antlr4-tools/pull/23
+        uv pip install --upgrade 'antlr4-tools @ git+https://github.com/crate-workbench/antlr4-tools@search.maven.org'
 
     - name: Run linter and software tests
       run: |