update Julia compatibility to version 1.12

Author: MohamedNumair

Project.toml

@@ -36,7 +36,7 @@ Polynomials = "~2.0.17, 3"
 PowerModelsDistribution = "~0.11, ~0.12, ~0.13, ~0.14, ~0.15, ~0.16"
 SpecialFunctions = "~1.5.1, ~1.6, ~1.7, ~1.8, ~2.0"
 TestEnv = "1.102.0"
-julia = "1.6 - 1.11"
+julia = "1.6 - 1.12"
 
 [extras]
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"