feat: add ed25519_verify host function

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest, macos-latest]
-        toolchain: [stable, 1.68.2]
+        toolchain: [stable, 1.69.0]
     steps:
       - uses: actions/checkout@v3
       - name: "${{ matrix.toolchain }} with rustfmt, and wasm32"

README.md

@@ -250,7 +250,7 @@ State breaking changes (low-level serialization format of any data type) will be
 
 ### MSRV
 
-The minimum supported Rust version is currently `1.68`. There are no guarantees that this will be upheld if a security patch release needs to come in that requires a Rust toolchain increase.
+The minimum supported Rust version is currently `1.69`. There are no guarantees that this will be upheld if a security patch release needs to come in that requires a Rust toolchain increase.
 
 ## Contributing
 

contract-builder/Dockerfile

@@ -1,8 +1,8 @@
-FROM rust:1.68.2
+FROM rust:1.69.0
 
 LABEL description="Container for builds"
 
-RUN rustup default 1.68.2
+RUN rustup default 1.69.0
 RUN rustup target add wasm32-unknown-unknown
 
 RUN apt-get -y update && apt-get install -y \