fix(deps): update dependency singer-sdk to ~=0.48.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
singer-sdk (changelog)	~=0.47.0 -> ~=0.48.0

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Release Notes

meltano/sdk (singer-sdk)

v0.48.0

Compare Source

✨ New

• #​3207 Automatically handle OpenAPI 2.0 and 3.0 specs
• #​3200 Expose new variable __original_stream_name__ in stream maps -- Thanks @​ReubenFrankel!
• #​3198 Update SQL tap and target templates with latest APIs
• #​3190 Added an extensible API for stream schema sources
• #​3189 Added .env.example files to tap, target and mapper templates
• #​3188 Update tap, target and mapper dependencies in templates
• #​3151 Define internal schema for stream_maps
• #​3141 Support disabling stream pagination logic -- Thanks @​ReubenFrankel!

🐛 Fixes

• #​3165 Honor order of primary key columns when creating an empty table
• #​3160 Make output of --about --format=markdown compliant with CommonMark
• #​3147 Run mypy in templates inside of a virtualenv including the package
• #​3148 Fixed the return type of RESTStream.get_new_paginator to indicate returning None is supported to indicate no pagination
• #​3145 Handle logging configuration not found gracefully
• #​3065 Revert table name splitting by - in SQL targets when default_target_schema is set, introduced in #​3020
• #​3127 Ensure Singer SDK warnings are logged
• #​3114 Centralize state writing to avoid emitting duplicate STATE messages

⚙️ Under the Hood

• #​3206 Make RESTStream.records_jsonpath read-only by default
• #​3204 Make get_stream_schema the public API of the StreamSchema descriptor
• #​3203 Make SchemaSource generic on any hashable key type
• #​3201 Make capabilities a proper class attribute for tap, target and mapper classes
• #​3187 Consolidate test parameters in built-in tests
• #​3181 Update type annotations of some functions to indicate they accept string path or a path-like object
• #​3180 Remove no-op deadcode for handling secret values
• #​3178 Check explicitly for a BaseTestClass subclass when generating built-in tests
• #​3175 Add type parameters to generic SingerTestRunner class
• #​3172 Use explicit submodule imports
• #​3166 Use the jsonschema validator instance directly instead of routing through jsonschema.validators.validator_for
• #​3164 Rename TestSuite → SingerTestSuite to prevent a pytest test collection warning
• #​3153 Read config files early
• #​3152 Use a click callback to parse config input arguments and deprecate PluginBase.config_from_cli_args
• #​3144 Pass catalog and state files early and pass the corresponding dictionaries to the tap class
• #​3123 Remove Faker class from stream maps
• #​3121 Remove singer_sdk._singerlib

📚 Documentation Improvements

• #​3208 Convert __NULL__ comment to admonition
• #​3122 Remove Faker class from stream maps docs

📦 Packaging changes

• #​3185 Declare support for Python 3.14
• #​3126 Require SQLAlchemy >= 2.0
• #​3099 Remove some unused Python version markers

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Configuration

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