chore: ensure we are upgrading image to avoid vulnerabilities

[gcf-owl-bot[bot]]

ensure we are upgrading to the latest version of packages to avoid vunerabilities

Source-Link: https://github.com/googleapis/synthtool/commit/b5c0ed498c5e18cb82ead7b88f11d2d4f1b26791 Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:2d9cc5ba06665c588e4d6accba03321d1314358ebb68dd0a7515ff28ada937ff