internal/rosa: xz artifact

Wanted to avoid this as much as possible. Unfortunately newer versions of GNU findutils only come in xz and is required for llvm compiler-rt sanitisers.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/all.go

@@ -58,6 +58,7 @@ const (
 	XCB
 	XCBProto
 	Xproto
+	XZ
 	Zlib
 
 	buildcatrust
@@ -135,6 +136,7 @@ func ResolveName(name string) (p PArtifact, ok bool) {
 		"xcb":               XCB,
 		"xcb-proto":         XCBProto,
 		"xproto":            Xproto,
+		"xz":                XZ,
 		"zlib":              Zlib,
 	}[name]
 	return