chore(deps): update terraform cloudflare to v3.28.0

This MR contains the following updates:

Package	Type	Update	Change
cloudflare (source)	required_provider	minor	3.27.0 -> 3.28.0

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Release Notes

cloudflare/terraform-provider-cloudflare

v3.28.0

Compare Source

ENHANCEMENTS:

• resource/cloudflare_zone: add new plans for zone subscriptions (#​2023)

BUG FIXES:

• resource/access_application: Fix issue where empty CORS headers state causes panics (#​2010)

DEPENDENCIES:

• provider: bumps dependabot/fetch-metadata from 1.3.4 to 1.3.5 (#​2008)
• provider: bumps github.com/cloudflare/cloudflare-go from 0.53.0 to 0.54.0 (#​2016)
• provider: bumps github.com/hashicorp/terraform-plugin-sdk/v2 from 2.24.0 to 2.24.1 (#​2024)

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