Release v0.52.2 with changes since v0.52.1

Notable Changes

1. We updated the base image to solve the CVE for git(ref: #6018 (comment)). Please update the piped or launcher image version to this version.
   Not just update via PipeCD controlplane UI.

2. We introduce tini to remove zombie processes.
   If you use launcher container, be sure to update launcher image version. Not just update via PipeCD controlplane UI.

Changes

• refactor metricsAnalyzer to render queries before execution. (#6010)
• Update piped-base container image version (#6018)
• Update piped-base-okd image for piped and launcher (#6023)
• Use tini to remove zombie process (#5997)
• Add tini into piped-base image (#5991)