vegeta: update to 12.13.0

net/vegeta/Portfile

@@ -3,9 +3,7 @@
 PortSystem          1.0
 PortGroup           golang 1.0
 
-go.setup            github.com/tsenart/vegeta 12.12.0 v
-# Delete this on next update to use golang PortGroup's default ('archive')
-github.tarball_from tarball
+go.setup            github.com/tsenart/vegeta 12.13.0 v
 categories          net
 maintainers         {amake @amake} openmaintainer
 license             MIT
@@ -16,9 +14,9 @@ long_description    A versatile HTTP load testing tool built out of a \
                     need to drill HTTP services with a constant request rate.
 
 checksums           ${distname}${extract.suffix} \
-                        rmd160  eb5690df32355e046c487466849c31932a466ea1 \
-                        sha256  bf837d594dbf9e1cb661109e7625bb37167c178c8207e5786b05b574b792a871 \
-                        size    905045
+                        rmd160  68f69390a91844b90079031daad040942ebd7a53 \
+                        sha256  4a360c815f5a8bdcae6db184860788696bb1c63d6999cc676e47690fc8b659e5 \
+                        size    680517
 
 go.vendors          pgregory.net/rapid \
                         repo    github.com/flyingmutant/rapid \