v23 upgrade instructions

juno-1/3000_v23_UPGRADE.md

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+# Juno v23 - Upgrade
+
+Additional links:
+
+- [Proposal #347](https://www.mintscan.io/juno/proposals/352).
+- [The v23.0.0 changelog is viewable here](https://github.com/CosmosContracts/juno/releases/tag/v23.0.0).
+
+The target block for this upgrade is [18032000](https://www.mintscan.io/juno/blocks/18032000), which is expected to arrive on _Thursday July 18th, 2024 at 13:56:47 + 00:00 UTC
+
+These are the instructions you will need if you run cosmovisor:
+
+```bash
+cd juno
+git fetch --tags && git checkout v23.0.0
+make build && make install
+
+junod version --long | grep "cosmos_sdk_version\|commit\|version:"
+# commit: bf140aa60045ba92b83d0cb7f3bc47a2661a4e7e
+# cosmos_sdk_version: v0.47.12
+# version: v23.0.0
+
+mkdir -p $DAEMON_HOME/cosmovisor/upgrades/v23/bin && cp $HOME/go/bin/junod $DAEMON_HOME/cosmovisor/upgrades/v23/bin
+
+$DAEMON_HOME/cosmovisor/upgrades/v23/bin/junod version
+```
+
+Alternatively, you can run the upgrade the old-fashioned way.