add deprecation decorator

[emmyoop]

resolves #6393

Description

Checklist

• I have read the contributing guide and understand what's expected of me
• I have signed the CLA
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• I have opened an issue to add/update docs, or docs changes are not required/relevant for this PR
• I have run changie new to create a changelog entry

[github-actions]

Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see the contributing guide.

[emmyoop]

Here is the output of the deprecation:

(env-protobuf) emily@Emily-Rockman basic-dbt % dbt deps
16:09:38  Running with dbt=1.4.0-b1
16:09:38  [WARNING]: `raise_parsing_error` is deprecated and will be removed in dbt-core version 1.5.0

Adapter maintainers can resolve this deprecation by using `raise ParsingException` directly instead.
See https://github.com/dbt-labs/dbt-core/issues/6393 for more details
16:09:38  Encountered an error:
Parsing Error
  Some fake msg
(env-protobuf) emily@Emily-Rockman basic-dbt %

[gshank]

Looks good