chore: bump cryptography from 41.0.5 to 41.0.6 in /synthtool/gcp/templates/python_library/.kokoro (#559)

Source-Link: https://github.com/googleapis/synthtool/commit/9367caadcbb30b5b2719f30eb00c44cc913550ed
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:2f155882785883336b4468d5218db737bb1d10c9cea7cb62219ad16fe248c03c

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
7 files changed