[MacPorts] #60144: watch @3.3.15: update upstream URL

[MacPorts]

#60144: watch @3.3.15: update upstream URL
-------------------------+--------------------
 Reporter:  FranklinYu   |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  watch
-------------------------+--------------------
 Upstream seems to be migrating from SourceForge to [https://gitlab.com
 /procps-ng/procps GitLab].

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Ticket URL: <https://trac.macports.org/ticket/60144>
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