CompatHelper: bump compat for ChemicalFormula to 0.3, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -20,7 +20,7 @@ UnitfulEquivalences = "da9c4bc3-91c8-4f02-8a40-6b990d2a7e0c"
 
 [compat]
 AbInitioSoftwareBase = "0.6.1, 0.8, 0.9"
-ChemicalFormula = "0.2"
+ChemicalFormula = "0.2, 0.3"
 ConstructionBase = "1"
 CrystallographyBase = "0.9, 0.10"
 OrderedCollections = "1"