#728 - Update to spring boot 3.0.3

BudgetMasterServer/pom.xml

...in/java/de/deadlocker8/budgetmaster/accounts/Account.java

.../deadlocker8/budgetmaster/accounts/AccountController.java

...dlocker8/budgetmaster/authentication/LoginController.java

...java/de/deadlocker8/budgetmaster/authentication/User.java

...ocker8/budgetmaster/authentication/WebSecurityConfig.java

...java/de/deadlocker8/budgetmaster/categories/Category.java

...adlocker8/budgetmaster/categories/CategoryController.java

...c/main/java/de/deadlocker8/budgetmaster/charts/Chart.java

...a/de/deadlocker8/budgetmaster/charts/ChartController.java

.../deadlocker8/budgetmaster/controller/AboutController.java

...deadlocker8/budgetmaster/controller/BackupController.java

...locker8/budgetmaster/controller/DatePickerController.java

.../deadlocker8/budgetmaster/controller/IndexController.java

...deadlocker8/budgetmaster/filter/FilterHelpersService.java

...src/main/java/de/deadlocker8/budgetmaster/hints/Hint.java

.../src/main/java/de/deadlocker8/budgetmaster/icon/Icon.java

...c/main/java/de/deadlocker8/budgetmaster/images/Image.java

...e/deadlocker8/budgetmaster/repeating/RepeatingOption.java

...ocker8/budgetmaster/repeating/endoption/RepeatingEnd.java