fix(schema): use anyOf for ruleset matching

[plyr4]

fixes an issue when using rulesets that match both the normal and the "flattened" props.

Steps to Reproduce

provide the schema to VSCode YAML extension (or use Yaml › Schema Store: Enable) and use the following pipeline syntax:

version: "1"
steps:
  - name: anything
     image: golang
     ruleset:
       continue: true
     commands:
     - "echo hello"

the continue tag within ruleset will match both objects provided in the Ruleset block based on the oneOf matcher.

error:

Matches multiple schemas when only one must validate.yaml-schema: Vela Pipeline Configuration

Note: im not sure if the bug exists for the other blocks using oneOf, i just see the error in ruleset because i apply continues when debugging.

[codecov]

Codecov Report

Merging #288 (abe3f10) into main (a4eb94b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #288   +/-   ##
=======================================
  Coverage   96.90%   96.90%           
=======================================
  Files          57       57           
  Lines        6329     6329           
=======================================
  Hits         6133     6133           
  Misses        145      145           
  Partials       51       51           

[codecov]

Codecov Report

Merging #288 (abe3f10) into main (a4eb94b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #288   +/-   ##
=======================================
  Coverage   96.90%   96.90%           
=======================================
  Files          57       57           
  Lines        6329     6329           
=======================================
  Hits         6133     6133           
  Misses        145      145           
  Partials       51       51           

[wass3r]

lgtm