Dependency updates and MSRV 1.46 (#208)

- cargo update
- cli: Bump x509-parser to 0.9
- Bump elliptic-curve to 0.8. Also requires bumping p256 and p384.
- Bump MSRV to 1.46.0. Required to match the MSRV of elliptic-curve.

.github/workflows/ci.yml

@@ -36,13 +36,13 @@ jobs:
             toolchain: stable
             deps: true
           - platform: ubuntu-latest
-            toolchain: 1.44.0 # MSRV
+            toolchain: 1.46.0 # MSRV
             deps: sudo apt-get install libpcsclite-dev
           - platform: windows-latest
-            toolchain: 1.44.0 # MSRV
+            toolchain: 1.46.0 # MSRV
             deps: true
           - platform: macos-latest
-            toolchain: 1.44.0 # MSRV
+            toolchain: 1.46.0 # MSRV
             deps: true
     runs-on: ${{ matrix.platform }}
     steps:
@@ -82,7 +82,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.44.0 # MSRV
+          toolchain: 1.46.0 # MSRV
           components: clippy
       - run: sudo apt-get install libpcsclite-dev
       - run: cargo clippy --all --exclude crypto_box --all-features -- -D warnings