Update build.yml

Author: xplshn

.github/workflows/build.yml

@@ -116,7 +116,8 @@ jobs:
         run: |
           apk add --no-cache \
             clang llvm mold \
-            musl-dev make curl
+            musl-dev make curl \
+            linux-headers
 
           for t in ar ranlib nm objcopy objdump strip strings size readelf addr2line; do
             ln -sf "/usr/bin/llvm-$t" "/usr/bin/$t"