dev-python/jinja: Fix python compatibility.

Python3_7 is not yet supported by COS.

BUG=b/181390843
TEST=presubmit
RELEASE_NOTE=None

cos-patch: lts-refresh
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/12531
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Anil Altinay <aaltinay@google.com>
Change-Id: Ifc54f1119e153714a677447c54e8e7ebb4aae302
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/13492
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
2 files changed