Fix bug of mysql deletion before mysqluser

What's Changed

• fix(deps): update module github.com/onsi/ginkgo/v2 to v2.9.1 by @renovate in #156
• chore: improve docker cache by @nakamasato in #149
• fix(deps): update k8s.io/utils digest to 38a27ef by @renovate in #157
• fix(deps): update module github.com/onsi/gomega to v1.27.4 by @renovate in #158
• chore(deps): update actions/setup-go action to v4 by @renovate in #160
• update installation by @nakamasato in #161
• fix: return nil when having secret by @nakamasato in #163
• docs: add monitoring to CONTRIBUTING.md by @nakamasato in #164
• fix(deps): update kubernetes packages to v0.26.3 by @renovate in #165
• fix(deps): update module github.com/onsi/ginkgo/v2 to v2.9.2 by @renovate in #166
• fix(deps): update module github.com/onsi/gomega to v1.27.5 by @renovate in #167
• add finalizer to mysql_controller by @nakamasato in #168

Full Changelog: v0.0.6...v0.0.7