Deprecate interface Symfony\Component\Validator\ExecutionContextInterface

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | yes
| Tests pass?   | yes
| Fixed tickets | [#12683]
| License       | MIT

Deprecate interface Symfony\Component\Validator\ExecutionContextInterface
Can you change the message to something along the lines of "The XXX interface was deprecated in version 2.X and will be removed in 3.0. Use ZZZ instead.".