revert Jackson to 2.12.1 due to issues with the 2.12.2 jackson-jaxrs-json-provider dependencies on maven central
revert Jackson to 2.12.1 due to issues with the 2.12.2 jackson-jaxrs-json-provider dependencies on maven central

ls1intum/ArTEMiS,ls1intum/ArTEMiS,ls1intum/ArTEMiS,ls1intum/ArTEMiS,ls1intum/ArTEMiS,ls1intum/ArTEMiS