fix uninstalling pandas on CI

Author: ngoldbaum

.github/workflows/ci.yml

@@ -78,5 +78,5 @@ jobs:
         working-directory: stringdtype
         run: |
           ASAN_OPTIONS=detect_leaks=false LD_PRELOAD=/usr/lib/gcc/x86_64-linux-gnu/11/libasan.so pytest -s -vvv --color=yes
-          pip uninstall pandas
+          pip uninstall -y pandas
           ASAN_OPTIONS=detect_leaks=false LD_PRELOAD=/usr/lib/gcc/x86_64-linux-gnu/11/libasan.so pytest -s -vvv --color=yes