fix periodic builds for ssdlc (#250)

# Summary

- we've added more operator versions
- in the past we split up the work but didn't have had the time to
dynamically split them up
- splitting them up here to run periodic builds for all agents 

## Proof of Work


[build_2](https://spruce.mongodb.com/task/mongodb_kubernetes_periodic_build_periodic_build_agent_2_patch_27640f974c9defa062d9b762351f93e3d7298d9c_6870fae614672d0007394e63_25_07_11_11_52_07/logs?execution=0)

[build_3](https://spruce.mongodb.com/version/6870fcded362490007ec8fb1/tasks?sorts=STATUS%3AASC%3BBASE_STATUS%3ADESC)


## Checklist
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- [ ] Have you checked for release_note changes?

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Author: nammn

.evergreen-periodic-builds.yaml

@@ -103,6 +103,22 @@ tasks:
         vars:
           image_name: mongodb-agent-1-daily
 
+  - name: periodic_build_agent_2
+    exec_timeout_secs: 43200
+    commands:
+      - func: enable_QEMU
+      - func: pipeline
+        vars:
+          image_name: mongodb-agent-2-daily
+
+  - name: periodic_build_agent_3
+    exec_timeout_secs: 43200
+    commands:
+      - func: enable_QEMU
+      - func: pipeline
+        vars:
+          image_name: mongodb-agent-3-daily
+
   #TODO should we still build the community operator?
   - name: periodic_build_community_operator
     commands:
@@ -142,6 +158,8 @@ task_groups:
       - periodic_build_sbom_cli
       - periodic_build_agent
       - periodic_build_agent_1
+      - periodic_build_agent_2
+      - periodic_build_agent_3
 
   - name: periodic_teardown_task_group
     <<: *setup_group