Prepare release 2.14.0

[hramezani]

Changes since v2.13.1

Features

• Allow customisation of the dotenv setting source to filter variables (Allow customisation of the dotevn setting source to filter variables #832)
• Support reading .env files from FIFOs (e.g. 1Password Environments) (Support reading .env files from FIFOs (e.g. 1Password Environments) #776)

Bug Fixes

• Fix CLI descriptions lost under python -OO by falling back to json_schema_extra (Fix CLI descriptions lost under python -OO by falling back to json_schema_extra #843)
• Fix cli_ignore_unknown_args=True not working on subcommands (Fix cli_ignore_unknown_args=True not working on subcommands #844)
• Fix CliPositionalArg[list[CustomType]] crash for custom types (Fix CliPositionalArg[list[CustomType]] crash for custom types #839)
• Fix CLI not recognizing field name with validate_by_name and AliasChoices (Fix CLI not recognizing field name with validate_by_name and AliasChoices #826)
• CLI ensure env nested max split internally (CLI ensure env nested max split internally. #821)
• Fix nested discriminated unions not discovered by env/CLI providers (Fix nested discriminated unions not discovered by env/CLI providers #816)
• Fix Literal[numeric Enum] coercion for CLI and env vars (Fix Literal[numeric Enum] coercion for CLI and env vars #811)
• Fix: resolve KeyError in run_subcommand for underscore field names (fix: resolve KeyError in run_subcommand for underscore field names #799)
• Fix AliasChoices ignored when changing provider priority (Fix AliasChoices ignored when changing provider priority #813)

Documentation

• Add note about Mypy plugin for BaseSettings.__init__() (Add note about Mypy plugin for BaseSettings.__init__() #842)

Internal

• Introduce zizmor (Introduce zizmor #838)
• Introduce yamlfmt (Introduce yamlfmt #836)
• Migrate boto3-stubs to types-boto3 (Migrate boto3-stubs to types-boto3 #831)
• Add Dependabot configuration (Add Dependabot configuration #801)