chore: bump rust compiler version to 1.73.0 for JVM and python builds

bdk-jvm/README.md

@@ -54,10 +54,10 @@ curl -s "https://get.sdkman.io" | bash
 source "$HOME/.sdkman/bin/sdkman-init.sh"
 sdk install java 11.0.19-tem
 ```
-2. Install Rust (note that we are currently building using Rust 1.67.0):
+2. Install Rust (note that we are currently building using Rust 1.73.0):
 ```shell
 curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
-rustup default 1.67.0
+rustup default 1.73.0
 ```
 3. Clone this repository.
 ```shell
@@ -95,6 +95,7 @@ Depending on the JVM version you use, you might not have the JNA dependency on y
 ```shell
 class file for com.sun.jna.Pointer not found
 ```
+
 The solution is to add JNA as a dependency like so:
 ```kotlin
 dependencies {