Update quick-xml requirement from 0.25 to 0.26 in /backend

[dependabot[bot]]

Updates the requirements on quick-xml to permit the latest version.

Changelog

Sourced from quick-xml's changelog.

0.26.0 -- 2022-10-23

Misc Changes

• #481: Removed the uses of const fn added in version 0.24 in favor of a lower minimum supported Rust version (1.46.0). Minimum supported Rust version is now verified in the CI.
• #489: Reduced the size of the package uploaded into the crates.io by excluding tests, examples, and benchmarks.

#481: tafia/quick-xml#481 #489: tafia/quick-xml#489

0.25.0 -- 2022-09-10

Bug Fixes

• #469: Fix incorrect parsing of CDATA and comments when using buffered readers

Misc Changes

• #468: Content of DeError::Unsupported changed from &'static str to Cow<'static, str>
• #468: Ensure that map keys are restricted to only types that can be serialized as primitives

#468: tafia/quick-xml#468 #469: tafia/quick-xml#469

0.24.1 -- 2022-09-10

Bug Fixes

• #469: Fix incorrect parsing of CDATA and comments when using buffered readers

#469: tafia/quick-xml#469

0.24.0 -- 2022-08-28

New Features

• #387: Allow overlapping between elements of sequence and other elements (using new feature overlapped-lists)
• #393: New module name with QName, LocalName, Namespace, Prefix and PrefixDeclaration wrappers around byte arrays and ResolveResult with the result of namespace resolution
• #180: Make Decoder struct public. You already had access to it via the Reader::decoder() method, but could not name it in the code. Now the preferred way to access decoding functionality is via this struct
• #395: Add support for XML Schema xs:list
• #324: Reader::from_str / Deserializer::from_str / from_str now ignore the XML declared encoding and always use UTF-8
• #416: Add borrow() methods in all event structs which allows to get

... (truncated)

Commits

• 7c423ce Release 0.26.0
• 76335ae Remove outdated note in readme
• 8fda027 Add changelog entry for #489
• 9c32654 Add explicit paths to tests and benches
• c3cf135 Exclude unnecessary files from package
• 240f204 Merge pull request #481 from dralley/msrv
• b8cdc1f Drop const fn from places where it was previously added in 0.24
• da5f1e7 Update versions of dependencies
• 64b2c4b Add changelog for 0.23.1 and 0.24.1
• See full diff in compare view

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[dependabot[bot]]

Looks like quick-xml is up-to-date now, so this is no longer needed.