[Backport] Version bumps and prdoc reorgs from stable2407-1 (#5374)

This PR backports regular version bumps and `prdoc` reorganisation from
the `stable2407` release branch to master

polkadot/node/primitives/src/lib.rs

@@ -59,7 +59,7 @@ pub use disputes::{
 /// relatively rare.
 ///
 /// The associated worker binaries should use the same version as the node that spawns them.
-pub const NODE_VERSION: &'static str = "1.15.0";
+pub const NODE_VERSION: &'static str = "1.15.1";
 
 // For a 16-ary Merkle Prefix Trie, we can expect at most 16 32-byte hashes per node
 // plus some overhead: