Bump min Rust version in CI

Author: ohadravid

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: "1.39.0"
+          toolchain: "1.69.0"
           default: true
 
       - run: cargo test
@@ -38,4 +38,4 @@ jobs:
         run: |
           cargo install cross
           cross build --target aarch64-apple-ios
-        if: matrix.os == 'macos-latest'
+        if: matrix.os == 'macos-latest'