Add miri component

Signed-off-by: Moritz Hoffmann <[email protected]>

Author: antiguru

.github/workflows/miri.yml

@@ -14,5 +14,7 @@ jobs:
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
           toolchain: nightly
+      - name: Install miri
+        run: rustup component add miri
       - name: Cargo test
         run: cargo miri test