chore(deps): update dependency open-policy-agent/conftest to v0.50.0 in testing/dockerfile (release-0.27)

[renovate]

This PR contains the following updates:

Package	Update	Change
open-policy-agent/conftest	minor	0.49.1 -> 0.50.0

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Release Notes

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

v0.50.0

Compare Source

Changelog

New Features

• bbee303: feat: Use ORAS credentials (#​917) (@​zregvart)

Bug Fixes

• dfcc0d9: fix: Catch Google Artifact Registry URL during OCI detection (#​921) (@​jpreese)

OPA Changes

• 4c74c13: build(deps): bump github.com/open-policy-agent/opa from 0.61.0 to 0.62.0 (#​925) (@​dependabot[bot])
• d6c450d: build(deps): bump github.com/open-policy-agent/opa from 0.62.0 to 0.62.1 (#​927) (@​dependabot[bot])

Other Changes

• 324d7fb: Update workflow action versions (#​914) (@​jpreese)
• 291f011: build(deps): bump cuelang.org/go from 0.7.0 to 0.7.1 (#​916) (@​dependabot[bot])
• a12c536: build(deps): bump github.com/moby/buildkit from 0.12.5 to 0.13.0 (#​926) (@​dependabot[bot])
• e20f3ee: build(deps): bump golang from 1.21.6-alpine to 1.22.0-alpine (#​913) (@​dependabot[bot])
• 42b8513: build: Bump Go to 1.22.x (#​915) (@​jalseth)
• d5dc9f8: chore: Update setup-regal and golangci-lint actions to latest (#​918) (@​jpreese)
• 343d024: cmd(verify): Enable show-builtin-errors by default (#​922) (@​jalseth)

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