v1.12 upgrade proposal

Author: assafmo

CHANGELOG.md

@@ -1,6 +1,6 @@
 # CHANGELOG
 
-# 1.12.0 (WIP)
+# 1.12.0
 
 - Fix the hardcoded admins feature
 - Add hardcoded admins according to proposals [269](https://dev.mintscan.io/secret/proposals/269) (Shillables) & [270](https://dev.mintscan.io/secret/proposals/270) (Sienna).

docs/proposals/v1.12.md

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+# Secret Network v1.12 Upgrade
+
+This proposal recommends that the chain undergo a software upgrade to version v1.12 of the Secret Network codebase on secret-4 block TODO. The estimated time for the upgrade is **Tuesday, October 17, 2023, at ~2pm UTC**.
+
+Since block times can vary significantly, we advise monitoring the chain for a more precise upgrade time. ETA monitor: [mintscan.io](https://dev.mintscan.io/secret/blocks/TODO) or [ping.pub](https://ping.pub/secret/block/TODO).
+
+## Upgrade Highlights
+
+- Fix the hardcoded admins feature
+- Add hardcoded admins according to proposals [269](https://dev.mintscan.io/secret/proposals/269) (Shillables) & [270](https://dev.mintscan.io/secret/proposals/270) (Sienna).
+- Fix PFM to stop dropping packets of IBC contracts.
+  - This has always been a bug in PFM. It was introduced in v1.9 and was missed because of a bug in our CI system.
+  - Fixed the bug in PFM and updated the dependency.
+  - For more info see https://github.com/cosmos/ibc-apps/pull/105.
+- Add `admin` to `WasmMsg::Instantiate` in cosmwasm-std (Thanks [@luca992](https://github.com/luca992)!).
+  - This allows contracts to specify an admin address when instantiating other contracts.
+  - See usage example [here](https://github.com/scrtlabs/SecretNetwork/blob/eedfac881/cosmwasm/contracts/v1/compute-tests/test-compute-contract/src/contract.rs#L245-L259).
+- Update IBC to v4.5.0
+
+## Upgrade Instructions
+
+See [docs.scrt.network](https://docs.scrt.network/secret-network-documentation/infrastructure/upgrade-instructions/v1.12) for upgrade instructions.