fix: allow vc properties in participants_matrix.cl (#715)

allow setting vc_* properties in participants_matrix.cl:

```
participants_matrix:
  el:
    - el_type: nethermind
      el_image: nethermindeth/nethermind:pectra
    - el_type: geth
      el_image: ethpandaops/geth:lightclient-prague-devnet-1
  cl:
    - cl_type: teku
      cl_image: ethpandaops/teku:master
    - cl_type: nimbus
      cl_image: ethpandaops/nimbus-eth2:unstable
    - cl_type: lodestar
      cl_image: ethpandaops/lodestar:electra-fork
      vc_max_mem: 1024
    - cl_type: grandine
      cl_image: ethpandaops/grandine:electra
```

in the example above, lodestar vc needs more than 500M memory for key
import, so I'd like to override the vc_max_mem accordingly.
This is theoretically allowed by the logic, but the new sanity check
prevents it.

Author: pk910

src/package_io/sanity_check.star

@@ -82,6 +82,18 @@ PARTICIPANT_MATRIX_PARAMS = {
             "cl_min_mem",
             "cl_max_mem",
             "use_separate_vc",
+            "vc_type",
+            "vc_image",
+            "vc_count",
+            "vc_log_level",
+            "vc_extra_env_vars",
+            "vc_extra_labels",
+            "vc_extra_params",
+            "vc_tolerations",
+            "vc_min_cpu",
+            "vc_max_cpu",
+            "vc_min_mem",
+            "vc_max_mem",
         ],
         "vc": [
             "vc_type",