Widen root MatrixAlgebraKit to "0.6"; exclude only 0.6.5 in test (#260)

Follow-up to #258. Under the bucket-rule compat check
([ITensorActions#79](ITensor/ITensorActions#79)),
within-bucket gaps no longer fail, so root can go back to `"0.6"`
instead of the narrow `"0.6.0 - 0.6.4"`.

`test/Project.toml` still needs to exclude MatrixAlgebraKit 0.6.5
because of its JLArrays compat break. Switching from `"0.6.0 - 0.6.4"`
to `"0.6.0 - 0.6.4, 0.6.6"` lets the resolver auto-pick up 0.6.6 as soon
as it's registered, with no further compat bump required here. The
trailing `"0.6.6"` uses bare caret semver (`[0.6.6, 0.7.0)`) so it stays
in the 0.6 bucket — `">=0.6.6"` would also admit 0.7+.

Closes #259.

### Changes

- root: `MatrixAlgebraKit = "0.6.0 - 0.6.4"` → `"0.6"`
- test: `MatrixAlgebraKit = "0.6.0 - 0.6.4"` → `"0.6.0 - 0.6.4, 0.6.6"`
- Patch version bump.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: mtfishman

Project.toml

@@ -1,6 +1,6 @@
 name = "BlockSparseArrays"
 uuid = "2c9a651f-6452-4ace-a6ac-809f4280fbb4"
-version = "0.10.38"
+version = "0.10.39"
 authors = ["ITensor developers <support@itensor.org> and contributors"]
 
 [workspace]
@@ -41,7 +41,7 @@ GPUArraysCore = "0.1, 0.2"
 LinearAlgebra = "1.10"
 MacroTools = "0.5.13"
 MapBroadcast = "0.1.5"
-MatrixAlgebraKit = "0.6.0 - 0.6.4"
+MatrixAlgebraKit = "0.6"
 SparseArraysBase = "0.9"
 SplitApplyCombine = "1.2.3"
 TensorAlgebra = "0.6.2, 0.7, 0.8, 0.9"

test/Project.toml

@@ -36,7 +36,7 @@ GPUArraysCore = "0.2"
 ITensorPkgSkeleton = "0.3.42"
 JLArrays = "0.2, 0.3"
 LinearAlgebra = "1"
-MatrixAlgebraKit = "0.6.0 - 0.6.4"
+MatrixAlgebraKit = "0.6.0 - 0.6.4, 0.6.6"
 Random = "1"
 SafeTestsets = "0.1"
 SparseArraysBase = "0.9"