softnet, tart: nest versioned depends_on macos in on_macos block

[Aayush9029]

Every brew command emits a deprecation warning for softnet and tart:

Warning: Calling `depends_on :macos` with `depends_on macos:` is
deprecated! Use `depends_on :macos` with `depends_on macos:` inside
an `on_macos` block instead.
  softnet.rb:18 / tart.rb:22

This wraps the versioned depends_on :macos => :sequoia / :ventura in an
on_macos block as Homebrew now requires, silencing the warning. No behavior
change.

Since these formulas are generated by GoReleaser, companion PRs fix the
custom_block in each source repo's .goreleaser.yml so future releases
regenerate correctly: cirruslabs/softnet and cirruslabs/tart.

[romualdoag]

LGTM

[wincent]

tart PR got merged upstream:

• fix(homebrew): wrap macOS version dependency in on_macos block openai/tart#1264

So presumably that will get synced over automatically after the next release (most recent release was 2.32.1, on 2026-04-12).

Still waiting for softnet PR to be merged:

• fix(homebrew): wrap macOS version dependency in on_macos block openai/softnet#169