gnu: slirp4netns: Update to 1.2.3.

* gnu/packages/containers.scm (slirp4netns): Update to 1.2.3.

Change-Id: I103b697069e631653e9063ee42456d0d0e898900
Signed-off-by: Christopher Baines <mail@cbaines.net>

gnu/packages/containers.scm

@@ -221,7 +221,7 @@ containers or various tools.")
 (define-public slirp4netns
   (package
     (name "slirp4netns")
-    (version "1.2.0")
+    (version "1.2.3")
     (source
      (origin
        (method git-fetch)
@@ -229,7 +229,7 @@ containers or various tools.")
              (url "https://github.com/rootless-containers/slirp4netns")
              (commit (string-append "v" version))))
        (sha256
-        (base32 "1rlzwp5fx1x3q179j9s2jp02imjag5pgj333z110nrvi7azl22l8"))
+        (base32 "0czvdsdv821fz4jd9rgrlkdhhjna6frawr8klvx3k2cfh444fbii"))
        (file-name (git-file-name name version))))
     (build-system gnu-build-system)
     (arguments