[MacPorts] #39087: py-pip: Update to 1.3.1

[MacPorts]

#39087: py-pip: Update to 1.3.1
-----------------------------+--------------------------------
  Reporter:  leone.parise@…  |      Owner:  macports-tickets@…
      Type:  update          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:
      Port:  py-pip          |
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Changes (by macsforever2000@…):

 * version:  2.1.3 =>
 * type:  request => update
 * port:   => py-pip


Comment:

 In the future, please fill in the Port field.

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Ticket URL: <https://trac.macports.org/ticket/39087#comment:1>
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