Changelog
3fedf6f remove writing default config (#746)
3fedf6f introduce GITLEAKS_CONFIG (#746)
-c, --config string config file path
order of precedence:
1. --config/-c
2. env var GITLEAKS_CONFIG
3. (--source/-s)/.gitleaks.toml
If none of the three options are used, then gitleaks will use the default config