Update quick-xml requirement from 0.25.0 to 0.26.0 (#2918)

Updates the requirements on [quick-xml](https://github.com/tafia/quick-xml) to permit the latest version.
- [Release notes](https://github.com/tafia/quick-xml/releases)
- [Changelog](https://github.com/tafia/quick-xml/blob/master/Changelog.md)
- [Commits](tafia/quick-xml@v0.25.0...v0.26.0)

---
updated-dependencies:
- dependency-name: quick-xml
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

object_store/Cargo.toml

@@ -44,7 +44,7 @@ walkdir = "2"
 
 # Cloud storage support
 base64 = { version = "0.13", default-features = false, optional = true }
-quick-xml = { version = "0.25.0", features = ["serialize"], optional = true }
+quick-xml = { version = "0.26.0", features = ["serialize"], optional = true }
 serde = { version = "1.0", default-features = false, features = ["derive"], optional = true }
 serde_json = { version = "1.0", default-features = false, optional = true }
 rand = { version = "0.8", default-features = false, features = ["std", "std_rng"], optional = true }