Merge pull request #13147 from gquintard/hitch_1.7.3

update hitch to 1.7.3

library/hitch

@@ -1,8 +1,8 @@
-# this file was generated using https://github.com/varnish/docker-hitch/blob/054c998138c8f8ec6be03c7db711b8435de41e2b/populate.sh
+# this file was generated using https://github.com/varnish/docker-hitch/blob/3f7f06a4eeb066e03f81f5e3d170d1e13606e69e/populate.sh
 Maintainers: Thijs Feryn <[email protected]> (@thijsferyn),
              Guillaume Quintard <[email protected]> (@gquintard)
 GitRepo: https://github.com/varnish/docker-hitch.git	
 
 Tags: 1, 1.7, 1.7.2, 1.7.2-1, latest
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 054c998138c8f8ec6be03c7db711b8435de41e2b
+GitCommit: 3f7f06a4eeb066e03f81f5e3d170d1e13606e69e