composer: update guzzlehttp/guzzle requirement from ^7.4 to ^7.14

[dependabot]

Updates the requirements on guzzlehttp/guzzle to permit the latest version.

Release notes

Sourced from guzzlehttp/guzzle's releases.

7.14.2

Security

• Prevent first-class and proxy URL credentials from reaching origins (GHSA-94pj-82f3-465w)

Changelog

Sourced from guzzlehttp/guzzle's changelog.

7.14.2 - 2026-07-14

Security

• Prevent first-class and proxy URL credentials from reaching origins (GHSA-94pj-82f3-465w)

7.14.1 - 2026-07-13

Changed

• Adjusted guzzlehttp/psr7 version constraint to ^2.12.5

Fixed

• Fail closed when a proxy tunnel isolation cURL option cannot be applied
• Normalize Stringable proxy credential values before computing connection-reuse section signatures
• Restore conservative credential redaction for unparseable proxies with multiple @ separators
• Redact request URI credentials from the stream handler connection error message
• Reject enabled response streaming (stream => true) on cap-configured stream handlers
• Distinguish CurlMultiHandler and StreamHandler outcomes in connection-cap custom-handler guidance
• Reject raw cURL options that conflict with explicit multiplexing guarantees
• Stop explicit multiplexing conflict checks faulting on non-array cURL multi options values
• Reject required multiplexing when the final CURLOPT_HTTPAUTH mask permits NTLM
• Require an integer CURLMOPT_PIPELINING when combined with explicit multiplexing
• Check the required multiplexing cleartext proxy rule against the final cURL configuration
• Bound cURL multi handler blocking selects by the earliest pending request delay
• Stop synchronous cURL multi handler waits blocking on other transfers once the target has settled
• Stop cURL multi completion processing double-settling promises canceled from completion callbacks
• Run ready promise queue tasks before sleeping for delayed cURL multi requests
• Avoid integer overflow in cURL multi delay timing on 32-bit platforms
• Roll back failed cURL multi handle attachment instead of leaving requests pending
• Release the cURL easy handle when the on_stats callback throws
• Normalize response trailer field names to lowercase with values in wire order
• Retain response trailers only when an on_trailers callback is configured
• Validate the on_trailers callback before starting a cURL transfer
• Reject the on_trailers request option on the stream handler, which cannot observe trailers
• Match cookies, proxy schemes, auth types, and header names with locale-independent ASCII folding
• Reject proxy option values that Guzzle cannot classify identically to ext-curl

7.14.0 - 2026-07-08

Added

• Added the on_trailers request option to expose parsed HTTP response trailers
• Added the multiplex request option with Multiplexing::* modes to control or require HTTP/2 multiplexing
• Added rejection of explicit multiplex requests when CURLMOPT_PIPELINING disables multiplexing
• Added the max_host_connections and max_total_connections client and cURL multi handler options

... (truncated)

Commits

• fa88c57 Release 7.14.2
• 9e4580d Never send first-class Proxy-Authorization headers to origins (#3876)
• 6b1d242 Release 7.14.1
• ecc7e53 Bump guzzlehttp/psr7 to ^2.12.5 (#3868)
• f8e8f4d Reject ambiguous raw proxy option types (#3862)
• 89e3d12 Tidy the 7.14.1 changelog (#3859)
• 3ebe5d8 Fix the multiplex conflict check for non-array multi options (#3858)
• 3384955 Fail closed on tunnel isolation and normalize proxy credentials (#3854)
• caf0f4e Correct the stream handler connection-cap contract wording (#3842)
• 97aa9ea Compare cookie and credential header names with ASCII folding (#3848)
• Additional commits viewable in compare view

[dependabot]

Superseded by #63.