ccm: update dependencies (#432)

- bump cipher and ctr dependencies to use it with the latest aes crate.
- bump hex-literal.
- change MSRV to 1.56.0.
- remove separate job "heapless" in github workflow.

Co-authored-by: Ruslan Piasetskyi <ruslan.piasetskyi@esrlabs.com>

.github/workflows/ccm.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.41.0 # MSRV
+          - 1.56.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -44,15 +44,15 @@ jobs:
         include:
           # 32-bit Linux
           - target: i686-unknown-linux-gnu
-            rust: 1.49.0 # MSRV
+            rust: 1.56.0 # MSRV
             deps: sudo apt update && sudo apt install gcc-multilib
           - target: i686-unknown-linux-gnu
             rust: stable
             deps: sudo apt update && sudo apt install gcc-multilib
 
           # 64-bit Linux
           - target: x86_64-unknown-linux-gnu
-            rust: 1.49.0 # MSRV
+            rust: 1.56.0 # MSRV
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
@@ -65,22 +65,5 @@ jobs:
           profile: minimal
       - run: ${{ matrix.deps }}
       - run: cargo test --target ${{ matrix.target }} --release
-      - run: cargo test --target ${{ matrix.target }} --release --features stream,std
+      - run: cargo test --target ${{ matrix.target }} --release --all-features
       - run: cargo build --target ${{ matrix.target }} --benches
-
-  # TODO(tarcieri): re-unify this with `test` when MSRV is 1.51+
-  heapless:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - 1.51.0 # MSRV for `heapless`
-          - stable
-    steps:
-      - uses: actions/checkout@v1
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: ${{ matrix.rust }}
-          override: true
-      - run: cargo test --release --all-features