v0.0.3 version bump and changelog update

[ross]

v0.0.3 - 2023-09-20 - All the commits fit to release

• SPF records can no longer be created, https://github.com/octodns/octodns-cloudflare/issues/28
• NAPTR and SSHFP support added
• All HTTP requests include a meaningful user-agent.
• AccountID filter support
• API token auth method/doc

/cc Fixes https://github.com/octodns/octodns-cloudflare/issues/54

[ross]

/cc https://pypi.org/project/octodns-cloudflare/0.0.3/