Bump rocket from 0.3.17 to 0.4.7 in /backend

[dependabot[bot]]

Bumps rocket from 0.3.17 to 0.4.7.

Release notes

Sourced from rocket's releases.

Rocket v0.4.7

See the CHANGELOG for more information.

Rocket v0.4.6

See the CHANGELOG for more information.

Rocket v0.4.5

See the CHANGELOG for more information.

Rocket v0.4.4

See the CHANGELOG for more information.

Rocket v0.4.3

See the CHANGELOG for more information.

Rocket v0.4.2

See the CHANGELOG for more information.

Rocket v0.4.1

See the CHANGELOG for more information.

Rocket v0.4.0

See the CHANGELOG and news article for more information.

Rocket v0.4-rc.2

See the CHANGELOG and news article for more information.

Rocket v0.4-rc.1

See the CHANGELOG and news article for more information.

Changelog

Sourced from rocket's changelog.

Version 0.4.7 (Feb 09, 2021)

Core

• [#1534, [2059a6]] Fixed a low-severity, minimal impact soundness issue in uri::Formatter.

#1534: SergioBenitez/Rocket#1534 [2059a6]: https://github.com/SergioBenitez/Rocket/commit/2059a6

Version 0.4.6 (Nov 09, 2020)

Core

• [86bd7c] Added default and configurable read/write timeouts: read_timeout and write_timeout.
• [c24a96] Added the sse feature, which enables flushing by returning io::ErrorKind::WouldBlock.

Docs

• Fixed broken doc links in contrib.
• Fixed database library versions in contrib docs.

Internal

• Updated source code for Rust 2018.
• UI tests now use trybuild instead of compiletest-rs.

Version 0.4.5 (May 30, 2020)

Core

• [#1312, [89150f]] Fixed a low-severity, minimal impact soundness issue in LocalRequest::clone().
• [#1263, [376f74]] Fixed a cookie serialization issue that led to incorrect cookie deserialization in certain cases.
• Removed dependency on ring for private cookies and thus Rocket, by default.
• Added [Origin::map_path()] for manipulating Origin paths.
• Added [handler::Outcome::from_or_forward()].
• Added [Options::NormalizeDirs] option to StaticFiles.
• Improved accessibility of default error HTML.

Docs

... (truncated)

Commits

• b67bd8b New version: 0.4.7.
• 2059a62 Update UI tests for latest nightly.
• b53a906 Fix soundness issue: make 'Formatter' panic-safe.
• b4fadae New version: 0.4.6.
• 11ec95e Update broken doc links in contrib.
• 08bf1c5 Update scripts.
• 86bd7c1 Allow read/write timeouts to be configured.
• 3970783 Fix SSE example, clean-up SSE related code.
• c24a963 Add support for immediate chunk flushing, SSE.
• 7b1995c For install Rust nightly in CI script.
• Additional commits viewable in compare view

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