ci: install nasm on release runner for Windows MSVC build

The aws-lc-sys crate (pulled transitively by rustls-platform-verifier,
reqwest's default cert verifier with the `rustls` feature) now requires
NASM to assemble its primitives when cross-compiling to
i686-pc-windows-msvc via cargo-xwin. The Linux i686 build is unaffected.

Author: NullSablex

.github/workflows/release.yml

@@ -42,7 +42,7 @@ jobs:
       - name: Install cross-compilation tools
         run: |
           sudo apt-get update
-          sudo apt-get install -y gcc-multilib g++-multilib clang llvm
+          sudo apt-get install -y gcc-multilib g++-multilib clang llvm nasm
 
       - name: Install cargo-xwin
         run: cargo install cargo-xwin --locked