Add wasm-opt-for-rust-maintenance-7 (#909)

Author: brson

maintenance_deliveries/wasm-opt-for-rust-maintenance-7.md

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+# Maintenance Delivery :mailbox:
+
+**The [invoice form :pencil:](https://docs.google.com/forms/d/e/1FAIpQLSfmNYaoCgrxyhzgoKQ0ynQvnNRoTmgApz9NrMp-hd8mhIiO0A/viewform) has been filled out correctly for this delivery**  
+
+* **Application Document:** https://github.com/w3f/Grants-Program/blob/master/applications/maintenance/wasm-opt-for-rust.md
+* **Delivery Number:** 7
+* **Delivery Date:** 2023/07/05
+
+
+**Context**
+
+We upgraded wasm-opt-rs to binaryen 113,
+published wasm-opt 0.113.0,
+and upgraded cargo-contract and substrate-wasm-builder.
+
+
+**Deliverables**
+
+Note: a full hourly accounting of work performed is included with the invoice.
+
+| Number | Deliverable | Link | Notes |
+| ------------- | ------------- | ------------- |------------- |
+| 1. | Binaryen 113 upgrade | https://github.com/brson/wasm-opt-rs/pull/145 | |
+| 2. | Upgrade cargo-contract to wasm-opt 0.113.0 | https://github.com/paritytech/cargo-contract/pull/1188 | |
+| 3. | Upgrade substrate to wasm-opt 0.113.0 | https://github.com/paritytech/substrate/pull/14485 | |
+
+**Additional Information**
+
+N/A