update recipe to use newer magma naming where possible

Author: h-vetinari

recipe/meta.yaml

@@ -133,8 +133,9 @@ requirements:
     - libcurand-dev
     - libcusolver-dev
     - libcusparse-dev
+    - libmagma-devel        # [cuda_compiler_version != "12.8"]
     # cannot (yet) use libmagma-devel due to https://github.com/conda-forge/libmagma-feedstock/issues/32
-    - magma
+    - magma                 # [cuda_compiler_version == "12.8"]
     - nccl                  # [linux]
     - nvtx-c
     {% endif %}
@@ -276,8 +277,9 @@ outputs:
         - libcurand-dev
         - libcusolver-dev
         - libcusparse-dev
+        - libmagma-devel        # [cuda_compiler_version != "12.8"]
         # cannot (yet) use libmagma-devel due to https://github.com/conda-forge/libmagma-feedstock/issues/32
-        - magma
+        - magma                 # [cuda_compiler_version == "12.8"]
         - nccl                  # [linux]
         - nvtx-c
         {% endif %}