Create the 3.2.1 release

[lornajane]

• fix: fix link to Appendix F
• Start 3.2.1
• Fix dead anchor links to appendix
• chore: empty commit to re-trigger CI
• Fix dialect link from 3.1 to 3.2
• Update oas.md
• fix a whitespace error
• Restored src/ and tests/**
• Restored src/ and tests/**
• Fix remaining broken link
• copy from 3.2.0
• bump version
• Fix dialect link from 3.1 to 3.2
• Update oas.md
• fix a whitespace error
• fixes to examples of template expansion of undefined (null) values
• provide an example of a prohibited use of "/" in the template
• punctuation
• remove invalid example
• clarify wording
• Port of fix: escape meaningful quotes in HTTP status code docs #5065
• remove unneeded span markup
• "undefined" in URI Templates is not just null, but can be other things
• the schema isn't just for specifying the expected type
• as per section 4.8.2, path parameter names cannot contain braces
• Fix JSON Schema keyword name.
• allowReserved only permitted where percent-encoding is done
• fix style, explode, allowReserved defaults for parameter and encoding objects
• working examples of parameter and encoding object permutations with all defaults omitted
• fix broken examples
• mention deserialization too
• specify how query parameters are added to the URL
• Fix yaml formatting
• Fix typo in HTTP Set-Cookie example
• Update section header from 'serializedExample' to 'serializedValue'
• Fix typo in querystring formats section
• fix broken $refs
• restore "propertyName" as required in the discriminator object
• apply the ABNF for header names at rfc9110 §5.1
• apply the ABNF for path parameter names, OAS 3.2.0 §4.8.2
• disallow the use of explode=false with cookies
• fix schema error in contentType
• Example object externalValue: URI identifies serialized data, does not contain it
• Media Type Example Server-Sent Event Streams: data with format: int64 should be integer
• fix OAS.md Appedix F URI inconsistencies
• OAD schema content object $comment: this is a property of Parameter, Request Body, Response, Header (not just Request Body)
• fix typo
• Fix incorrect xml closing tags
• Fix unclosed html li tags
• simplify broken json in SetCookie example
• Fix missing name for responses component in example
• Fix const value in example to match requestBody data
• Fix broken $ref in example
• Fixed correct level of encoding object
• Fix malformed json
• Fix http QUERY method link text to match its url
• Update http QUERY draft link to the latest
• Add externalValue to example
• include an ABNF for contentType
• transposed digits in section reference
• feat: updates the query RFC link and wording
• describe stringified response codes without referencing a specific format (v3.3: describe stringified response codes without referencing a specific formaat #5332)
• remove unnecessary use of "content" (v3.3: remove unnecessary use of "content" #5333)
• be clear which property we are referring to (v3.3: be clear which property we are referring to #5330)
• include an ABNF for contentType (amended) (v3.3: include an ABNF for contentType #5324)
• use extra markup to clarify intent (v3.3: use extra markup to clarify intent #5331)
• fix error: these keywords deal with items, not properties (fix error: these keywords deal with items, not properties #5386)
• set the type here, to ensure the body content is deserialized as an object (v3.3: set the type here, to ensure the body content is deserialized as an object #5390)
• fix error: encoding objects also now apply to array items (v3.3: fix error: encoding objects also now apply to array items #5404)
• define a mechanism for preserving value/part order in forms (v3.3: define a mechanism for preserving value/part order in forms #5403)
• some media-types, e.g. multipart/form-data, define an explicit ordering (v3.3: define a mechanism for preserving value/part order in forms #5403)
• replace "array schema" with clearer definition (v3.3: replace "array schema" with clearer definition #5334)
• clarify how encoding works for deserialization too (v3.3: clarify how encoding works for deserialization too #5422)
• add more cross-references for how to determine the json schema dialect
• remove invalid mention of prefixEncoding, itemEncoding here
• include parallel clause for encoding by position
• fix whitespace (mistakenly added in v3.2: ports from 3.3 (June/July 2026) #5420)
• Restored src/ and tests/schema/
• Make the v3.2.1 official

[lornajane]

Close the failed release branch