chore(deps): bump pyjwt from 2.14.0 to 2.15.1 in /backend

[dependabot]

Bumps pyjwt from 2.14.0 to 2.15.1.

Release notes

Sourced from pyjwt's releases.

2.15.1

See the 2.15.1 changelog for complete release details.

2.15.0

See the 2.15.0 changelog for complete release details.

Changelog

Sourced from pyjwt's changelog.

v2.15.1 <https://github.com/jpadilla/pyjwt/compare/2.15.0...2.15.1>__

Fixed

- Accept trailing Base64URL ``=`` padding when decoding JWS segments, so
  tokens issued by AWS ALB and similar systems verify instead of raising
  ``DecodeError: Invalid crypto padding``. Non-alphabet junk such as
  ``!!!!`` remains rejected (`[#1209](https://github.com/jpadilla/pyjwt/issues/1209) <https://github.com/jpadilla/pyjwt/issues/1209>`__).
v2.15.0 &lt;https://github.com/jpadilla/pyjwt/compare/2.14.0...2.15.0&gt;__
Security

• Wrap recursion errors from deeply nested JWT payloads in DecodeError instead of exposing a raw RecursionError.

Added

- Support Python 3.15 by @kytta in `[#1202](https://github.com/jpadilla/pyjwt/issues/1202) <https://github.com/jpadilla/pyjwt/pull/1202>`__
Changed

• JWKSetCache now stores the parsed PyJWKSet rather than the raw JWKS payload, so a cache hit no longer re-parses every key. JWKSetCache.put() accepts either form and raises PyJWKSetError for anything else. As a result, PyJWKClient.get_jwk_set() returns the same PyJWKSet instance for as long as it stays cached, rather than a freshly built one per call in [#1208](https://github.com/jpadilla/pyjwt/issues/1208) <https://github.com/jpadilla/pyjwt/pull/1208>__
• PyJWKClient.fetch_data() now raises PyJWKClientError("The JWKS endpoint did not return a JSON object") when the endpoint response is not a JSON object, instead of returning it for get_jwk_set() to reject. Callers reaching the JWKS through get_jwk_set() see the same error as before in [#1208](https://github.com/jpadilla/pyjwt/issues/1208) <https://github.com/jpadilla/pyjwt/pull/1208>__

Fixed

- Return cached ``PyJWKSet`` values from ``PyJWKClient.get_jwk_set()`` instead
  of raising ``PyJWKClientError("The JWKS endpoint did not return a JSON
  object")``. ``JWKSetCache.put()`` documents ``PyJWKSet`` as the cached value,
  so callers pre-populating the cache to avoid a network round-trip could not
  read it back in `[#914](https://github.com/jpadilla/pyjwt/issues/914) <https://github.com/jpadilla/pyjwt/issues/914>`__ and
  `[#1208](https://github.com/jpadilla/pyjwt/issues/1208) <https://github.com/jpadilla/pyjwt/pull/1208>`__
</tr></table> 

... (truncated)

Commits

• 7d5ef55 chore: prepare 2.15.1 release
• 7bf3252 Accept canonical Base64URL padding in JWT segments (#1216)
• 1d41a64 chore: prepare 2.15.0 release
• 9bc0665 fix: make recursive payload tests deterministic
• 5fde08a fix: normalize recursive JWT payload errors
• 171062d utils: mention bytes in force_bytes type error (#1173)
• c9d4d53 docs/conf: drop duplicate 'and' from read() docstring (#1174)
• 2763752 Add support for Python 3.15 (#1202)
• 4adcd02 Catch http.client.HTTPException in PyJWKClient.fetch_data (#1201)
• 9e501d9 fix: correct docstring typo in _validate_jti (#1179)
• Additional commits viewable in compare view

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[purvanshjoshi]

Approved: Legitimate dependabot patch/minor update with bug fixes and security improvements.

[purvanshjoshi]

@dependabot rebase

[purvanshjoshi]

@dependabot rebase