Update spring-boot-starter-parent to 3.5.16

Update README.md

Remove .travis.yml

Update jasypt-spring-boot-starter to 4.0.4

Update spring-boot-starter-parent to 3.5.11

Update spring-boot-starter-parent to 3.5.7

Update README.md

Update Dockerfile

Update JDK to 21 pom.xml and CI/CD

Update jQuery to 3.7.1

Edit minify-maven-plugin's phase to process-resources

Update spring-boot-starter-parent to 3.1.12