Fix grammar update.

Author: kklein

.github/workflows/update_grammar.yml

@@ -19,16 +19,16 @@ jobs:
                 fetch-depth: 0
             - name: Set up pixi
               uses: prefix-dev/setup-pixi@v0.8.1
+              with:
+                environments: grammar
             - name: Download ANTLR
               working-directory: src/pytsql/grammar
               run: wget https://repo1.maven.org/maven2/org/antlr/antlr4/4.13.1/antlr4-4.13.1-complete.jar
             - name: Download latest grammar definition and re-generate grammar targets
-              working-directory: src/pytsql/grammar
-              run: |
-                bash helper_generate_grammar_targets.sh antlr4-4.13.1-complete.jar -d
+              run: pixi run update-grammar
             - name: Install package (test compilation)
               run:
-                pixi run pip install .
+                pixi run -e grammar pip install .
             - name: Create Pull Request
               uses: peter-evans/create-pull-request@v7
               with: