Upgrade to Spring Boot 2.6.4 and Java 17
*Upgrade to Spring Boot 2.6.4
*Upgrade to Java 17
*Migrate to JUnit5
*Migrate from travis to GitHub Actions
*Multiple dependency upgrades
*Upgrade to Spring Boot 2.6.4
*Upgrade to Java 17
*Migrate to JUnit5
*Migrate from travis to GitHub Actions
*Multiple dependency upgrades