Bump p28 host to ba37ea5f

Re-points stellar-xdr from git rev 3305b3e to the released 28.0.0 on
crates.io. Regenerates Cargo.lock and p28-expect.txt, whose only change
is that dependency's source.

Author: sisuresh

Cargo.lock

@@ -119,7 +119,7 @@ tracy-client = { version = "=0.17.0", features = [
 version = "=28.0.0"
 git = "https://github.com/stellar/rs-soroban-env"
 package = "soroban-env-host"
-rev = "65d7532bfff4eee2528ba3cb3024fcd3344e71ba"
+rev = "ba37ea5f76a10710835992fb90f9ec7a14eca499"
 optional = true
 # This dependency is only enabled by the `fastdev` feature, which implies
 # `next`, so the host is always wanted at its next-protocol number here. The

src/rust/Cargo.toml

@@ -259,7 +259,7 @@ soroban-env-host v28.0.0 (src/rust/soroban/p28/soroban-env-host)
 │   │   │   ├── itoa v1.0.6
 │   │   │   ├── ryu v1.0.13
 │   │   │   └── serde v1.0.192 (*)
-│   │   ├── stellar-xdr v27.0.0 (https://github.com/stellar/rs-stellar-xdr?rev=3305b3e31f19fdb4e64e4b7a4354bb120cdf4415#3305b3e3)
+│   │   ├── stellar-xdr v28.0.0
 │   │   │   ├── escape-bytes v0.1.1
 │   │   │   ├── ethnum v1.5.3
 │   │   │   ├── hex v0.4.3
@@ -289,7 +289,7 @@ soroban-env-host v28.0.0 (src/rust/soroban/p28/soroban-env-host)
 │   │   └── wasmparser-nostd v0.100.2
 │   │       └── indexmap-nostd v0.4.0
 │   ├── static_assertions v1.1.0
-│   ├── stellar-xdr v27.0.0 (https://github.com/stellar/rs-stellar-xdr?rev=3305b3e31f19fdb4e64e4b7a4354bb120cdf4415#3305b3e3)
+│   ├── stellar-xdr v28.0.0
 │   │   ├── base64 v0.22.1
 │   │   ├── escape-bytes v0.1.1
 │   │   ├── ethnum v1.5.3