* added loading of submission data schema
* added submission data validation to sender and subscriber flow
* added and adjusted tests and test data
* added attribute for skipping validations to config, fixed tests

Update dependency com.networknt:json-schema-validator to v1.0.78

See merge request !138

chore: move hints for retrieving regional codes and leika keys to main section for destination search

Update dependency org.yaml:snakeyaml to v2

See merge request !134

Update dependency org.apache.maven.plugins:maven-compiler-plugin to v3.11.0

See merge request !135

Update dependency org.apache.maven.plugins:maven-assembly-plugin to v3.5.0

See merge request !132

Update dependency com.nimbusds:nimbus-jose-jwt to v9.31

See merge request !131

added checks of schema URI and MIME type based on available destinations, adjusted and extended tests

Update dependency org.apache.maven.plugins:maven-javadoc-plugin to v3.5.0

See merge request !126

Update dependency com.nimbusds:nimbus-jose-jwt to v9.30.2

See merge request !125

Update dependency org.apache.maven.plugins:maven-surefire-plugin to v3.0.0-M9

See merge request !122

# Conflicts:
#   pom.xml

Update dependency org.apache.maven.plugins:maven-failsafe-plugin to v3.0.0-M9

See merge request !121

Update dependency com.networknt:json-schema-validator to v1.0.77

See merge request !120