CompatHelper: bump compat for "BlockBandedMatrices" to "0.11" (#63)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

Project.toml

@@ -24,7 +24,7 @@ AbstractFFTs = "0.5, 1"
 ApproxFunBase = "0.5"
 BandedMatrices = "0.16"
 BlockArrays = "0.14, 0.15, 0.16"
-BlockBandedMatrices = "0.10"
+BlockBandedMatrices = "0.10, 0.11"
 DomainSets = "0.5"
 FFTW = "1.1"
 FastGaussQuadrature = "0.4"