frr: T7663: add missing build dependencies libnl-3-dev & libpcre3-dev

Author: c-po

scripts/package-build/frr/package.toml

@@ -18,8 +18,10 @@ packages = [
     "libcap-dev",
     "libc-ares-dev",
     "libjson-c-dev",
+    "libnl-3-dev",
     "librtr-dev",
     "libpam-dev",
+    "libpcre3-dev",
     "libprotobuf-c-dev",
     "libpython3-dev:native",
     "python3-sphinx:native",