pngquant: update to 2.12.2

closes https://trac.macports.org/ticket/54525

graphics/pngquant/Portfile

@@ -3,7 +3,7 @@
 PortSystem          1.0
 PortGroup           github 1.0
 
-github.setup        pornel pngquant 2.1.0
+github.setup        pornel pngquant 2.12.2
 categories          graphics
 platforms           darwin
 maintainers         nomaintainer
@@ -19,19 +19,16 @@ long_description    pngquant is a ${description}. \
 
 homepage            http://pngquant.org/
 master_sites        ${homepage}
-use_bzip2           yes
 distfiles           ${name}-${version}-src${extract.suffix}
 
-checksums           rmd160  f76bf91ed33b00eb5f5daf1e3b03ffe1170d5707 \
-                    sha256  ef41138ff320495c785155eb9f774ae6e1d41978b3e490854e6a8c46c0b032e2
+checksums           rmd160  47ce3ac79a3b93cf6aa7413ea0596dd87f8d466c \
+                    sha256  bb031c48039ee73ea0e60709bb9ab80c55bfa3a5920b798ea37a03f2757b099c \
+                    size    143404
 
-depends_lib         port:libpng \
+depends_lib-append  port:libpng \
+                    port:lcms2 \
                     port:zlib
 
-patchfiles          patch-Makefile.diff
-
-use_configure       no
-
 variant universal {}
 
 if {[vercmp [macports_version] 2.5.99] >= 0} {