fix(deps): update dependency werkzeug to v3.1.8

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This PR contains the following updates:

Package	Change	Age	Confidence
werkzeug (changelog)	3.1.6 → 3.1.8

Review

• Updates have been tested and work
• If updates are AWS related, versions match the infrastructure (e.g. Lambda runtime, database, etc.)

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Release Notes

pallets/werkzeug (werkzeug)

v3.1.8

Compare Source

Released 2026-04-02

• Request.host and get_host return the empty string if the header is
  missing or has invalid characters. :issue:3142

v3.1.7

Compare Source

Released 2026-03-23

• parse_list_header preserves partially quoted items, discards empty
  items, and returns empty for unclosed quoted values. :pr:3128
• WWWAuthenticate.to_header does not produce a trailing space when there
  are no parameters. :issue:3127
• Transfer-Encoding is parsed as a set. :pr:3134
• Request.host, get_host, and host_is_trusted validate the
  characters of the value. An empty value is no longer allowed. A Unix socket
  server address is ignored. The trusted_list argument to
  host_is_trusted is optional. :pr:3113
• Fix multipart form parser handling of newline at boundary. :issue:3088
• Response.make_conditional sets the Accept-Ranges header even if it
  is not a satisfiable range request. :issue:3108
• merge_slashes merges any number of consecutive slashes. :issue:3121

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