Add report for the Cannon Go 1.23 support fix (#16479)

Author: pauldowman

docs/security-reviews/2025-06-Spearbit-Cannon-fix-review.pdf

@@ -40,5 +40,7 @@ Please see the report for the specific details.
 | 2025-04 | Cantina (contest)           | Interop Portal Contracts (u16)                                                                                                                                                                                            | [2025_04-Interop-Portal-Cantina.pdf](./2025_04-Interop-Portal-Cantina.pdf)                                                                                 | e4b921c9dbf8cd3a8db20ef4f15e0e2aa495fcc3 | op-contracts/v4.0.0 |
 | 2025-05 | Spearbit                    | Interop Portal Contracts (u16)                                                                                                                                                                                            | [2025_05-Interop-Portal-Spearbit.pdf](./2025_05-Interop-Portal-Spearbit.pdf)                                                                               | 7cd84fed9554193c2dcd683e1ff2d0e2605448f6 | op-contracts/v4.0.0 |
 | 2025-05 | Coinbase Protocol Security  | Cannon updates to support Go 1.23 and Kona                                                                                                                                                                                | [2025_05-Cannon-Go-Updates-Coinbase.pdf](./2025_05-Cannon-Go-Updates-Coinbase.pdf)                                                                         | 4c68444bc9b130e892b52cacf67b31f0424fb6d0 |                     |
+| 2025-06 | Spearbit                    | Cannon Go 1.23 support fix review                                                                                                                                                                                         | [2025-06-Spearbit-Cannon-fix-review.pdf](./2025-06-Spearbit-Cannon-fix-review.pdf)                                                                         | ffe3d5fed05cabf46a67ea00627a0959c0caa0b5 | op-contracts/v4.0.0 |
+
 
 [kontrol]: https://github.com/ethereum-optimism/optimism/blob/876e16ad04968f0bb641eb76f98eb77e7e1a3e16/packages/contracts-bedrock/test/kontrol/README.md