patches to support newer quick-xml

[plugwash]

I have just updated quick-xml in Debian and patched xcb accordingly.

Code changes were made to address the following changes in quick-xml 0.23

fix: do not unescape CDATA content because it never escaped by design. CDATA event data now represented by its own BytesCData type (tafia/quick-xml#311)

refactor: now Attributes::next() returns a new type AttrError when attribute parsing failed (Mingun/fast-xml#4)

Code changes were made to address the following changes in quick-xml 0.24

tafia/quick-xml#412: Rename methods of Reader:

tafia/quick-xml#393: Now BytesStart::name() and BytesEnd::name() returns QName, and BytesStart::local_name() and BytesEnd::local_name() returns LocalName

tafia/quick-xml#415: Renamed functions for consistency across the API:

tafia/quick-xml#421: All unescaping functions now accepts and returns strings instead of byte slices

tafia/quick-xml#393: Types of Attribute::key and Attr::key() changed to QName

tafia/quick-xml#412: Change read_to_end* and read_text_into to accept QName instead of AsRef<[u8]>

No code changes were needed for quick-xml 0.25 or 0.26

The patches are available at

https://salsa.debian.org/rust-team/debcargo-conf/-/blob/master/src/xcb/debian/patches/quick-xml-0.23.diff

https://salsa.debian.org/rust-team/debcargo-conf/-/blob/master/src/xcb/debian/patches/quick-xml-0.24.diff