Updating mapping to double for long

[johnmichaelmurner]

Related Issue(s):

#320

Description:

Convert dynamic mapping from

{"numerics": {"match_mapping_type": "long", "mapping": {"type": "float"}}},

{"numerics": {"match_mapping_type": "long", "mapping": {"type": "double"}}},

PR Checklist:

• Code is formatted and linted (run pre-commit run --all-files)
• Tests pass (run make test)
• Documentation has been updated to reflect changes, if applicable
• Changes are added to the changelog

[StijnCaerts]

Best to keep the mapping for Opensearch in sync with Elasticsearch:

stac-fastapi-elasticsearch-opensearch/stac_fastapi/opensearch/stac_fastapi/opensearch/database_logic.py

Line 108 in e45cfea

{"numerics": {"match_mapping_type": "long", "mapping": {"type": "float"}}},

https://opensearch.org/docs/latest/field-types/supported-field-types/numeric/