chore: make clear that it's still under development (#451)

## fixes https://github.com/KILTprotocol/ticket/issues/2387

Cargo.toml

@@ -19,7 +19,7 @@ homepage = "https://kilt.io/"
 license-file = "LICENSE"
 readme = "README.md"
 repository = "https://github.com/KILTprotocol/kilt-node"
-version = "1.9.0"
+version = "1.9.0-dev"
 
 [workspace.dependencies]
 # Build deps
@@ -69,7 +69,7 @@ mashnet-node-runtime = {path = "runtimes/standalone", default-features = false}
 peregrine-runtime = {path = "runtimes/peregrine", default-features = false}
 spiritnet-runtime = {path = "runtimes/spiritnet", default-features = false}
 
-# Benchmarking (with default disabled) 
+# Benchmarking (with default disabled)
 cumulus-pallet-session-benchmarking = {git = "https://github.com/paritytech/cumulus", default-features = false, branch = "polkadot-v0.9.32"}
 frame-system-benchmarking = {git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.32"}
 
@@ -129,7 +129,7 @@ sp-std = {git = "https://github.com/paritytech/substrate", default-features = fa
 sp-transaction-pool = {git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.32"}
 sp-version = {git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.32"}
 try-runtime-cli = {git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.32"}
- 
+
 # Polkadot (with default disabled)
 pallet-xcm = {git = "https://github.com/paritytech/polkadot", default-features = false, branch = "release-v0.9.32"}
 polkadot-parachain = {git = "https://github.com/paritytech/polkadot", default-features = false, branch = "release-v0.9.32"}