chore(deps): update dependency open-policy-agent/conftest to v0.53.0 in testing/dockerfile (main)

[renovate]

This PR contains the following updates:

Package	Update	Change
open-policy-agent/conftest	minor	0.52.0 -> 0.53.0

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Release Notes

open-policy-agent/conftest (open-policy-agent/conftest)

v0.53.0

Compare Source

Changelog

OPA Changes

• 96470c2: build(deps): bump github.com/open-policy-agent/opa from 0.64.1 to 0.65.0 (#​953) (@​dependabot[bot])

Other Changes

• c33a50c: build(deps): bump alpine from 3.19.1 to 3.20.0 (#​951) (@​dependabot[bot])
• 31700e1: build(deps): bump cuelang.org/go from 0.8.1 to 0.9.0 (#​956) (@​dependabot[bot])
• 525f071: build(deps): bump github.com/BurntSushi/toml from 1.3.2 to 1.4.0 (#​950) (@​dependabot[bot])
• eeef9e2: build(deps): bump github.com/CycloneDX/cyclonedx-go from 0.8.0 to 0.9.0 (#​954) (@​dependabot[bot])
• 30b3734: build(deps): bump golang from 1.22.2-alpine to 1.22.3-alpine (#​949) (@​dependabot[bot])
• 493cfd5: tests: extend hcl cases: tag verification (#​955) (@​boranx)

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