Megalinter: Validation failed - "truthy" acts on "on"-keyword (swagger-editor-validator.yaml)

[maxl2287]

Describe the bug

I discovered a bug during a PR creation.

YAMLLINT failure
❌ Linted [YAML] files with [yamllint]: Found 1 error(s) - (1.34s) (expand for details)

• Using [yamllint v1.32.0] https://megalinter.io/7.3.0/descriptors/yaml_yamllint
• MegaLinter key: [YAML_YAMLLINT]
• Rules config: [/github/workspace/.yamllint.yaml]
• Number of files analyzed: [6]
  --Error detail:
  .github/workflows/swagger-editor-validator.yml
  Error: 2:1 [truthy] truthy value should be one of [false, true]

✅ Linted [REPOSITORY] files with [git_diff] successfully - (0.06s) (expand for details)
✅ Linted [OPENAPI] files with [spectral] successfully - (3.54s) (expand for details)

+----SUMMARY----+------------+---------------+-------+-------+--------+--------------+
| Descriptor | Linter | Mode | Files | Fixed | Errors | Elapsed time |
+---------------+------------+---------------+-------+-------+--------+--------------+
| ✅ ACTION | actionlint | list_of_files | 2 | | 0 | 0.0s |
| ✅ OPENAPI | spectral | file | 1 | | 0 | 3.54s |
| ✅ REPOSITORY | git_diff | project | n/a | | 0 | 0.06s |
| ✅ REPOSITORY | grype | project | n/a | | 0 | 12.98s |
| ✅ REPOSITORY | secretlint | project | n/a | | 0 | 1.33s |
| ✅ REPOSITORY | trivy-sbom | project | n/a | | 0 | 1.59s |
| ✅ REPOSITORY | trufflehog | project | n/a | | 0 | 5.29s |
| ✅ XML | xmllint | list_of_files | 2 | 0 | 0 | 0.06s |
| ✅ YAML | v8r | list_of_files | 6 | | 0 | 5.08s |
| ❌ YAML | yamllint | list_of_files | 6 | | 1 | 1.34s |
+---------------+------------+---------------+-------+-------+--------+--------------+

Why is there an error

• Megalinter acts on truthy-values for "on"-keywords

Expected behavior
Disable truthy "on" rule-validation.

on:  # yamllint disable-line rule:truthy
  pull_request:
    branches:
      - main

[maxl2287]

Related issues on "yamllint":
adrienverge/yamllint#430

[maxl2287]

allowed-values defines the list of truthy values which will be ignored during linting. The default is ['true', 'false'], but can be changed to any list containing: 'TRUE', 'True', 'true', 'FALSE', 'False', 'false', 'YES', 'Yes', 'yes', 'NO', 'No', 'no', 'ON', 'On', 'on', 'OFF', 'Off', 'off'.

Maybe also "on" could be put on the list of "truthy"-ignored values for keywords.
source: https://yamllint.readthedocs.io/en/stable/rules.html#module-yamllint.rules.truthy