compat GHA: use tdbs 1.15.2 (#24)

Author: ryan-williams

.github/workflows/python-tilledbsoma-ml-compat.yml

@@ -31,7 +31,7 @@ jobs:
           - "tiledbsoma~=1.12.0"
           - "tiledbsoma~=1.13.0"
           - "tiledbsoma~=1.14.0"
-          - "tiledbsoma~=1.15.0rc4"
+          - "tiledbsoma~=1.15.2"
 
     runs-on: ${{ matrix.os }}