x509-cert: adds a builder for certificate

Author: baloo

.github/workflows/x509-cert.yml

@@ -38,7 +38,7 @@ jobs:
           toolchain: ${{ matrix.rust }}
           targets: ${{ matrix.target }}
       - uses: RustCrypto/actions/cargo-hack-install@master
-      - run: cargo hack build --target ${{ matrix.target }} --feature-powerset --exclude-features arbitrary,default,std
+      - run: cargo hack build --target ${{ matrix.target }} --feature-powerset --exclude-features arbitrary,builder,default,std
 
 # FIXME: Temporary disabled until https://github.com/rust-fuzz/arbitrary/issues/136 is fixed
 #  minimal-versions: