chore(main): release flux-oci-certm-lets-encrypt-dns-issuer 0.3.0

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🤖 I have created a release beep boop

0.3.0 (2025-11-27)

Features

• dis-cr: deploy certificate that uses letsencrypt-staging cluster-issuer (#2136) (2e8fc90)
• dis-cr: deploy dns child zone and cert-manager tls issuer (#2126) (c9d50fe)

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