v0.5.3

What's Changed

• Update release doc to use new project for GCR by @askmeegs in #567
• Add Log4j advisory in the README by @bourgeoisor in #577
• Bump log4j to 2.17.1 by @bourgeoisor in #586
• Added snippet bot yml file by @ckim328 in #587
• Fix release refs path to bank-of-anthos-ci by @bourgeoisor in #588

Full Changelog: v0.5.2...v0.5.3