v0.51.0

feat: add scorecard @nitrocode (#118)

## what

• add scorecard github action

why

• publish results on openssf website
• able to showcase scores using a badge

references

• https://securityscorecards.dev/#how-it-works
• example of an existing project https://scorecard.dev/viewer/?uri=github.com/ossf/scorecard-action
• example for tested internal project https://scorecard.dev/viewer/?uri=github.com/cloudposse/terraform-module-test
• main repo https://github.com/ossf/scorecard
• action https://github.com/ossf/scorecard-action
• borrowed from https://github.com/renovatebot/renovate/blob/9b64288861fcebfcce7a4938307dec52c04ec54f/.github/workflows/scorecard.yml#L2
• Tested in cloudposse/terraform-module-test#117