bump rand_core from 0.6.4 to 0.9.2; edition 2024; bump MSRV to 1.85 (#478)

This also bumps the dependency of `signature` from `2.3.0-pre.4` to `2.3.0-pre.5`

Author: baloo

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.83.0 # MSRV
+          - 1.85.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -35,7 +35,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.83.0 # MSRV
+          - 1.85.0 # MSRV
           - stable
     steps:
       - uses: actions/checkout@v4
@@ -51,6 +51,7 @@ jobs:
       - run: cargo test --release --features serde
 
   minimal-versions:
+    if: false # disabled until we remove pre-releases dependencies 
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -71,5 +72,5 @@ jobs:
       - uses: RustCrypto/actions/cargo-cache@master
       - uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: nightly-2024-10-06
+          toolchain: nightly-2025-02-22
       - run: cargo build --benches

.github/workflows/workspace.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: RustCrypto/actions/cargo-cache@master
       - uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.83.0
+          toolchain: 1.85.0
           components: clippy
       - run: cargo clippy --all -- -D warnings
 
@@ -40,7 +40,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           # We need Nightly for doc_auto_cfg
-          toolchain: nightly-2024-11-30
+          toolchain: nightly-2025-02-22
       - uses: Swatinem/rust-cache@v2
       - env:
           RUSTDOCFLAGS: "-Dwarnings --cfg docsrs"