Packaging cleanup

* Declare compliance with policy 4.5.0
* Set Rule-Requires-Root: no

debian/control

@@ -1,11 +1,12 @@
 Source: http-parser
 Maintainer: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
 Homepage: https://github.com/joyent/http-parser
-Standards-Version: 4.4.0
+Standards-Version: 4.5.0
 Vcs-Browser: https://git.in-ulm.de/cbiedl/http-parser
 Vcs-Git: https://git.in-ulm.de/cbiedl/http-parser.git
 Build-Depends: debhelper-compat (= 12),
 Priority: optional
+Rules-Requires-Root: no
 Section: libs
 
 Package: libhttp-parser2.9