Merge bitcoindevkit/bdk#1721: chore(deps): bump hashbrown to v0.14.5

52fa5404bdecc96939f47f7567e2605f449b4b2a chore(deps): bump hashbrown to v0.14.5, disable default features (Tommy Volk)

Pull request description:

  Bump [`hashbrown`](https://crates.io/crates/hashbrown) to v0.15

  I ran [`cargo build-all-features` and `cargo test-all-features`](https://github.com/frewsxcv/cargo-all-features) locally for the `core` crate with no issues. Here's the output for the former:

  ```
  cargo build-all-features

      Building crate=bdk_core features=[]
      Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
      Building crate=bdk_core features=[hashbrown]
      Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
      Building crate=bdk_core features=[serde]
      Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
      Building crate=bdk_core features=[std]
      Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
      Building crate=bdk_core features=[hashbrown,serde]
      Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
      Building crate=bdk_core features=[hashbrown,std]
      Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
      Building crate=bdk_core features=[serde,std]
      Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
      Building crate=bdk_core features=[hashbrown,serde,std]
      Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
  ```

  The relevant changelog can be found between [here](https://github.com/rust-lang/hashbrown/blob/master/CHANGELOG.md#v0100---2021-01-16) and [here](https://github.com/rust-lang/hashbrown/blob/master/CHANGELOG.md#v0151---2024-11-03)

  The only notable breaking change I found was that the MSRV was bumped to v1.63. However, this is the same MSRV as we already use, so it's not a breaking change for us.

ACKs for top commit:
  notmandatory:
    ACK 52fa5404bdecc96939f47f7567e2605f449b4b2a

Tree-SHA512: 8281148b86c80e7e7dd32c40d1bc5081c0e772876e9db3f0e20a9748e755f541fa923ad596be3de5f1bb2d8e46ab8987196869ca445f46afa696b2c7552d829e