feat(action.yml): add checkout-token input for enhanced checkout flexibility

fix(action.yml): stop pinning

fix(action.yml): default to fetch-depth of 1

fix(action.yml): use decrypt-dotenv-vault hotfix

fix(action.yml): use latest version of decrypt-dotenv-vault

fix(action.yml): upgrade default node environment to 22

fix(action.yml): defer caching to decrypt-dotenv-vault

fix(action.yml): require exact caching

fix(action.yml): error if .env.vault DNE

feat(action.yml): add caching

fix(action.yml): use updated version of decrypt-dotenv-vault; use .env shorthand for "" or "development" modes

docs(README.md): initial documentation

feat(action.yml): initial implementation

Initial commit