Correct licence files

[Simon Bennetts]

Sorry, I used the ZAP License on these files - feel free to change them to your prefered license 😄 :

• https://github.com/sepehrdaddev/zap-scripts/blob/main/gradle/spotless/license.java
• https://github.com/sepehrdaddev/zap-scripts/blob/main/src/main/java/com/github/sepehrdaddev/zap_scripts/ExtensionSepehrdadScripts.java