libsecret: vala and gobject-introspection bindings

Mentioned in #31518
libsecret: update 0.18 bottle.

Closes #31536.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
macvim: Drop python dynamic linking hack

Closes #31537.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Allow use of ICU4C to support Intl (EcmaScript-402) support