Update ClinVar script to import somatic classifications + patch db schema 115

[dglemos]

Ticket: https://www.ebi.ac.uk/panda/jira/browse/ENSVAR-5941

• add db schema patches: patch_114_115_a.sql and patch_114_115_b.sql
• add new clinvar attrib types to attrib_entries.sql (new attrib types were inserted in the production db on 2024-10-31)
• update clinvar import
• update clinvar post process
• update API
• add tests

This update should be merged before Ensembl/ensembl-vep#1794