Bug: panic error if cd trigger fails

[gireesh-naidu]

📜 Description

if cd trigger is failed ,then orchestrator getting restarted with panic error

👟 Reproduction steps

1. make something to fail cd trigger
2. observe orchestrator panicing with error
   panic: runtime error: invalid memory address or nil pointer dereference
   [Mar 09 2023 19:16:33 GMT+0530] orchestrator: [signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x42c1d97]
   [Mar 09 2023 19:16:33 GMT+0530] orchestrator: goroutine 249 [running]:
   [Mar 09 2023 19:16:33 GMT+0530] orchestrator: github.com/devtron-labs/devtron/pkg/pipeline.(*WorkflowDagExecutorImpl).updatePreviousDeploymentStatus(0xc000994000, 0xc00068adc0, 0x0?, {0x5789100, 0xc001915120}, {0xc000584718?, 0xc0013078a8?, 0x76dba20?}, 0x1)

👍 Expected behavior

should not panic, the error should have been handled properly

👎 Actual Behavior

orchestrator panicing with error
panic: runtime error: invalid memory address or nil pointer dereference
[Mar 09 2023 19:16:33 GMT+0530] orchestrator[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x42c1d97]
[Mar 09 2023 19:16:33 GMT+0530] orchestrator: goroutine 249 [running]:
[Mar 09 2023 19:16:33 GMT+0530] orchestrator: github.com/devtron-labs/devtron/pkg/pipeline.(*WorkflowDagExecutorImpl).updatePreviousDeploymentStatus(0xc000994000, 0xc00068adc0, 0x0?, {0x5789100, 0xc001915120}, {0xc000584718?, 0xc0013078a8?, 0x76dba20?}, 0x1)

☸ Kubernetes version

v1

Cloud provider

🌍 Browser

Chrome

🧱 Your Environment

No response

✅ Proposed Solution

No response

👀 Have you spent some time to check if this issue has been raised before?

• I checked and didn't find any similar issue

🏢 Have you read the Code of Conduct?

• I have read the Code of Conduct