Change CI to use system python (#487)

michaellzc · Sourcegraph · web-flow · commit 5624315fd7b1 · 2022-02-03T15:10:26.000-08:00
Co-authored-by: Sourcegraph &lt;batch-changes@sourcegraph.com&gt;
diff --git a/.tool-versions b/.tool-versions
@@ -1,2 +1,3 @@
-python 3.10.0
+python system
 yarn 1.22.11
+nodejs 16.7.0
