Merge #1886: ci: pin minreq to 2.13.2, base64ct to 1.6.0 for MSRV

a186f00 ci: pin `minreq` to `2.13.2` (Luis Schwab)
1a3b420 ci: pin `base64ct` to `1.6.0` (Luis Schwab)

Pull request description:

  <!-- You can erase any parts of this template not applicable to your Pull Request. -->

  ### Description

  - Pin `minreq` to `2.13.2` because `2.13.3` uses the unstable `std::sync::LazyLock` (#1886 (comment)).
  - Pin `base64ct` to `1.6.0` for MSRV.

  Required for #1885 (`ubuntu-24.04` on all CI workflows).

  ### Checklists

  #### All Submissions:

  * [X] I've signed all my commits
  * [X] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [X] I ran `cargo fmt` and `cargo clippy` before committing

ACKs for top commit:
  LagginTimes:
    ACK a186f00
  ValuedMammal:
    ACK a186f00

Tree-SHA512: cfc78846c3225caa28bcd985bdec670ffccd564b6b8c4b9e9d6c8fdb3bf923005704118e994f1e211f8a52b7ddb34d9fe9b30d89a1d5254eca146f1720466e49

Author: ValuedMammal

.github/workflows/cont_integration.yml

@@ -50,6 +50,8 @@ jobs:
           cargo update -p home --precise "0.5.9"
           cargo update -p native-tls --precise "0.2.13"
           cargo update -p idna_adapter --precise "1.1.0"
+          cargo update -p base64ct --precise "1.6.0"
+          cargo update -p minreq --precise "2.13.2"
       - name: Pin dependencies for MSRV
         if: matrix.rust.version == '1.63.0'
         run: ./ci/pin-msrv.sh

ci/pin-msrv.sh

@@ -26,3 +26,5 @@ cargo update -p flate2 --precise "1.0.35"
 cargo update -p bzip2-sys --precise "0.1.12"
 cargo update -p ring --precise "0.17.12"
 cargo update -p once_cell --precise "1.20.3"
+cargo update -p base64ct --precise "1.6.0"
+cargo update -p minreq --precise "2.13.2"