Trac #31782: Update sage_numerical_backends_gurobi to 9.3, adds suppo…

…rt for IntegralityFocus parameter

Gurobi has a parameter "!IntegralityFocus" described at

- https://www.gurobi.com/documentation/9.1/refman/integralityfocus.html

which however is not supported by sage-numerical-backends-gurobi.

A fix was proposed in the pull request

- sagemath/sage-numerical-backends-gurobi#5

but it remains open for quite a while.

Initial report:

- [https://ask.sagemath.org/question/55959 Ask Sage question 55959:
solver parameter not available in Mixed Integer Linear Programming]

URL: https://trac.sagemath.org/31782
Reported by: gh-maxale
Ticket author(s): Matthias Koeppe
Reviewer(s): Travis Scrimshaw

build/pkgs/sage_numerical_backends_gurobi/checksums.ini

@@ -1,5 +1,5 @@
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 upstream_url=https://pypi.io/packages/source/s/sage_numerical_backends_gurobi/sage_numerical_backends_gurobi-VERSION.tar.gz

build/pkgs/sage_numerical_backends_gurobi/package-version.txt

@@ -1 +1 @@
-9.0.0
+9.3.1