add build matrix back in

ci/conda/recipes/libmrc/conda_build_config.yaml

@@ -26,10 +26,14 @@ cuda_compiler_version:
   - 11.8
 
 python:
+  - 3.8
+  - 3.10
   - 3.10
 
 # Setup the dependencies to build with multiple versions of RAPIDS
 rapids_version: # Keep around compatibility with current version -2
+  - 23.02
+  - 23.04
   - 23.06
 
 # Multiple versions of abseil are required to satisfy the solver for some
@@ -38,15 +42,31 @@ rapids_version: # Keep around compatibility with current version -2
 # together to avoid impossible combinations
 libabseil:
   - 20230125.0
+  - 20230125.0
+  - 20230125.0
 
 libgrpc:
+  - 1.51
+  - 1.51
   - 1.54
 
 ucx:
+  - 1.13
+  - 1.14
   - 1.14
 
 libprotobuf:
   - 3.21
+  - 3.21
+  - 3.21
+
+zip_keys:
+  - python
+  - rapids_version
+  - libabseil
+  - libgrpc
+  - ucx
+  - libprotobuf
 
 # The following mimic what is available in the pinning feedstock:
 # https://github.com/conda-forge/conda-forge-pinning-feedstock/blob/main/recipe/conda_build_config.yaml
@@ -59,7 +79,6 @@ gflags:
 glog:
   - 0.6
 
-
 pin_run_as_build:
   boost-cpp:
     max_pin: x.x