Merge bitcoindevkit/bdk#1776: ci: automated update to rustc 1.83.0

Merge bitcoindevkit/bdk#1776: ci: automated update to rustc 1.83.0

272ce227b40da4990821baee239f1a227d79e4d8 ci: update build_docs job to use rust nightly (Steve Myers)
1755480d3ca87c2bff98035adc008d2d6a570ccc ci: use prepared rust-version instead of stable for all jobs (Steve Myers)
173cc42d00748e95df889fd487b5bebf458109d6 ci(clippy): fix updated ptr_arg check for rust 1.83 (Steve Myers)
1d03db9ab37bfe623e16bc85f712d4a1db4c51ed ci(clippy): fix new default warn empty_line_after_doc_comments for rust 1.83 (Steve Myers)
941bca0d405f86e748ea629a2e241bffa41108f8 ci(clippy): fix new stricter needless_lifetime errors for rust 1.83 (Steve Myers)
2586e1eb9fbdf583460e25e80324251b0cf3f60c ci: automated update to rustc 1.83.0 (Github Action)

Pull request description:

  Automated update to Github CI workflow `cont_integration.yml` by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action

  I manually fixed new clippy warnings.

  I also changed CI to:
  ~~1. not build or run tests or test dependencies when building with MSRV.  This reduced the number of dependencies we need to pin for MSRV and fixes 1398.~~ I removed these changes.
  2. use the same version or rust as in the `rust-version` file for all jobs instead of just for clippy. I made this change to prevent CI breaks when stable changes before we have a chance to fix the auto created PR that bumps the `rust-version` file.

ACKs for top commit:
  oleonardolima:
    tACK 272ce227b40da4990821baee239f1a227d79e4d8
  nymius:
    tACK 272ce227b40da4990821baee239f1a227d79e4d8
  ValuedMammal:
    ACK 272ce227b40da4990821baee239f1a227d79e4d8

Tree-SHA512: de3e9447e25f82474cd6902ade9dfad4145686b4084296d3fd2065e28bf811579bbaa18225d175372e7dd9914377c6e8260998ff991b0f482f19551884bbf9ca