Fix deprecated depends_on macos: string format in cask

[joshjohnsonux]

Warning: Calling string comparison format for depends_on macos: is deprecated! Use depends_on macos: :catalina instead.
Please report this issue to the endara-ai/homebrew-tap tap (not Homebrew/* repositories), or even better, submit a PR to fix it:
/opt/homebrew/Library/Taps/endara-ai/homebrew-tap/Casks/endara.rb:14

Environment:
Homebrew 6.0.6 on MacOS Tahoe (26.5.1)

[joshjohnsonux]

It seems like the declaration matches the example from Homebrew. Not seeing where it's deprecated or what the new format should be.

[joshjohnsonux]

Turns out that Homebrew's exact match syntax is now an implicit minimum.

Implicit Minimum: In the Homebrew Cask Domain Specific Language (DSL), a bare symbol automatically evaluates as a "greater than or equal to" ( >= ) comparison. Writing depends_on macos: :catalina explicitly translates to requiring macOS Catalina or any newer release.

so depends_on macos: :catalina will be treated not as "exactly catalina" but "at least catalina"