chore(deps): update dependency open-policy-agent/conftest to v0.48.0 in testing/dockerfile (release-0.27)

[renovate]

This PR contains the following updates:

Package	Update	Change
open-policy-agent/conftest	minor	0.47.0 -> 0.48.0

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Release Notes

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

v0.48.0

Compare Source

Changelog

New Features

• 0b9b2c6: feat: Add show-builtin-errors flag for the verify command (#​901) (@​jalseth) ⚠️ This flag will be enabled by default in a future version of conftest ⚠️

Bug Fixes

• 8a6e121: fix: Fix regexp for Goreleaser groups (#​892) (@​jalseth)

OPA Changes

• 6e5f656: build(deps): bump github.com/open-policy-agent/opa from 0.59.0 to 0.60.0 (#​900) (@​dependabot[bot])

Other Changes

• 7ac3a5b: build(deps): bump alpine from 3.18.4 to 3.19.0 (#​896) (@​dependabot[bot])
• 92c0594: build(deps): bump cuelang.org/go from 0.6.0 to 0.7.0 (#​894) (@​dependabot[bot])
• f222d94: build(deps): bump github.com/CycloneDX/cyclonedx-go from 0.7.2 to 0.8.0 (#​895) (@​dependabot[bot])
• 433560f: build(deps): bump github.com/hashicorp/go-getter to v1.7.3 (#​899) (@​jalseth)
• a552673: build(deps): bump golang from 1.21.4-alpine to 1.21.5-alpine (#​897) (@​dependabot[bot])

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