Update nlopt submodule

DanielBok · DanielBok · commit 39963de618d5 · 2024-04-03T09:57:36.000+08:00
diff --git a/.python-version b/.python-version
@@ -0,0 +1 @@
+3.12.2
diff --git a/extern/nlopt b/extern/nlopt
@@ -1 +1 @@
-Subproject commit c40b5486c12da6eb994984021bfbfb2ef160cbf6
+Subproject commit 7a7587e5ef1cb15f412515d852d1fc261c863e96
