Release v6.0.3

• Bump squizlabs/php_codesniffer from 3.7.2 to 3.8.0 by @dependabot in #89
• Bump squizlabs/php_codesniffer from 3.8.0 to 3.8.1 by @dependabot in #90
• Bump ergebnis/composer-normalize from 2.31.0 to 2.42.0 by @dependabot in #91
• Upgraded to latest PS dependencies by @BitcoinMitchell in #93

Full Changelog: v6.0.2...v6.0.3

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Thank you @ndeet for testing.