CompatHelper: bump compat for BlockBandedMatrices to 0.12, (keep existing compat) (#147)

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

Author: github-actions[bot]

Project.toml

@@ -27,7 +27,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 ArrayLayouts = "0.8.6, 1"
 BandedMatrices = "0.17"
 BlockArrays = "0.16.14"
-BlockBandedMatrices = "0.11.5"
+BlockBandedMatrices = "0.11.5, 0.12"
 ClassicalOrthogonalPolynomials = "0.7"
 ContinuumArrays = "0.12"
 DomainSets = "0.5, 0.6"