CompatHelper: bump compat for LDLFactorizations to 0.9, (keep existing compat) (#493)

Co-authored-by: CompatHelper Julia <[email protected]>

Author: github-actions[bot]

Project.toml

@@ -17,7 +17,7 @@ AbstractTrees = "0.2, 0.3"
 BenchmarkTools = "1"
 ECOS = "1"
 GLPK = "1"
-LDLFactorizations = "0.8.1"
+LDLFactorizations = "0.8.1, 0.9"
 MathOptInterface = "1"
 OrderedCollections = "1"
 SCS = "1"