gnu: git: Fix builds with Make 4.2.

* gnu/packages/version-control.scm (git)[arguments]: Add 'add-PM.stamp'
phase.

gnu/packages/version-control.scm

@@ -173,6 +173,11 @@ as well as the classic centralized workflow.")
               (("/bin/sh") (which "sh"))
               (("/usr/bin/perl") (which "perl"))
               (("/usr/bin/python") (which "python")))))
+        (add-after 'configure 'add-PM.stamp
+          (lambda _
+            ;; Add the "PM.stamp" to avoid "no rule to make target".
+            (call-with-output-file "perl/PM.stamp" (const #t))
+            #t))
         (add-after 'install 'install-shell-completion
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out         (assoc-ref outputs "out"))