Dependabot fixes and Dependency Updates (#135)

* Use toml based rust-toolchain file

so dependabot can pick it up.

* Update dependencies

* Avoid toolchain action

as it doesnt support new rust-toolchain.toml format yet

.github/workflows/cargo-check.yaml

@@ -11,10 +11,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          components: rustfmt, clippy
+      - name: setup rust toolchain
+        run: rustup show
+      - name: install rust toolchain components
+        run: rustup component add rustfmt clippy
       - name: Check formatting
         run: cargo fmt --all -- --check
       - name: Clippy