feat(sambanova): update model YAMLs [bot] (#1374)

Co-authored-by: Truefoundry Models Bot <truefoundry-models-bot@users.noreply.github.com>

Author: models-bot[bot]

providers/sambanova/gemma-3-12b-it.yaml

@@ -2,8 +2,10 @@ costs:
     - input_cost_per_token: 3.5e-7
       output_cost_per_token: 5.9e-7
       region: "*"
+deprecationDate: "2026-06-09"
 features:
     - system_messages
+isDeprecated: true
 limits:
     context_window: 128000
 modalities:
@@ -15,9 +17,10 @@ modalities:
 mode: chat
 model: gemma-3-12b-it
 provisioning: serverless
+retirementDate: "2026-06-09"
 sources:
     - https://docs.sambanova.ai/docs/en/features/function-calling
     - https://docs.sambanova.ai/docs/en/features/vision
-status: preview
+status: retired
 supportedModes:
     - chat