Panic / segfault (SIGSEGV) during an active EC2 ssh session (with aws ssm & SSO)

I am using ssh to connect to EC2 instances; the ssh configuration uses:
- `ec2-instance-connect` to send the public ssh key to the host;
- `ssm start-session` to actually start the ssh session
Authentication for the aws cli is done using SSO (provided by Azure and configured using `aws configure sso`).
Session is sometimes cut-off by an go application panic (segfault), I removed the token value and the email address domain name:
```
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x865016]

goroutine 67 [running]:
github.com/aws/aws-sdk-go/aws/credentials/ssocreds.(*SSOTokenProvider).refreshToken(0xc000912100, {{{0xc000360000, 0xe8}, 0xc00000f0c8, {0xc0003600f0, 0xe9}, {0xc00002cc00, 0x22}, {0xc0000e2900, 0x808}}, ...})
/local/p4clients/pkgbuild-pmMNN/workspace/src/SSMCLI/vendor/src/github.com/aws/aws-sdk-go/aws/credentials/ssocreds/token_provider.go:115 +0x276
github.com/aws/aws-sdk-go/aws/credentials/ssocreds.(*SSOTokenProvider).RetrieveBearerToken(0xc000912100, {0x0?, 0x0?})
/local/p4clients/pkgbuild-pmMNN/workspace/src/SSMCLI/vendor/src/github.com/aws/aws-sdk-go/aws/credentials/ssocreds/token_provider.go:86 +0x185
github.com/aws/aws-sdk-go/aws/credentials/ssocreds.(*Provider).RetrieveWithContext(0xc000035180, {0xc52390, 0xc00048c640})
/local/p4clients/pkgbuild-pmMNN/workspace/src/SSMCLI/vendor/src/github.com/aws/aws-sdk-go/aws/credentials/ssocreds/provider.go:107 +0x3b3
github.com/aws/aws-sdk-go/aws/credentials.(*Credentials).singleRetrieve(0xc000035200, {0xc52390, 0xc00048c640})
/local/p4clients/pkgbuild-pmMNN/workspace/src/SSMCLI/vendor/src/github.com/aws/aws-sdk-go/aws/credentials/credentials.go:277 +0x373
github.com/aws/aws-sdk-go/aws/credentials.(*Credentials).GetWithContext.func1()
/local/p4clients/pkgbuild-pmMNN/workspace/src/SSMCLI/vendor/src/github.com/aws/aws-sdk-go/aws/credentials/credentials.go:255 +0x79
github.com/aws/aws-sdk-go/internal/sync/singleflight.(*Group).doCall(0xc000035200, 0xc000091ec0, {0x0, 0x0}, 0xc0000636b8?)
/local/p4clients/pkgbuild-pmMNN/workspace/src/SSMCLI/vendor/src/github.com/aws/aws-sdk-go/internal/sync/singleflight/singleflight.go:97 +0x3b
created by github.com/aws/aws-sdk-go/internal/sync/singleflight.(*Group).DoChan
/local/p4clients/pkgbuild-pmMNN/workspace/src/SSMCLI/vendor/src/github.com/aws/aws-sdk-go/internal/sync/singleflight/singleflight.go:90 +0x2eb

Command '['session-manager-plugin', '{"SessionId": "cristian.constantin@xxx", "TokenValue": "", "StreamUrl": "wss://ssmmessages.eu-west-1.amazonaws.com/v1/data-channel/cristian.constantin@xxx?role=publish_subscribe&cell-number=AAEAAUABAFXX0PIRv3PwHtPxpAXGlFSRWre8nKY5BYk8vVN5AAAAAGXKAGXPKw+Kv1XCNdgOiygRzoviEWWL0J5BHut0X0Wc+Wel9Q==", "ResponseMetadata": {"RequestId": "2b7a6e63-9fc3-4733-a5eb-53154bb696c7", "HTTPStatusCode": 200, "HTTPHeaders": {"server": "Server", "date": "Mon, 12 Feb 2024 11:26:29 GMT", "content-type": "application/x-amz-json-1.1", "content-length": "1061", "connection": "keep-alive", "x-amzn-requestid": "2b7a6e63-9fc3-4733-a5eb-53154bb696c7"}, "RetryAttempts": 0}}', 'eu-west-1', 'StartSession', '', '{"Target": "", "DocumentName": "AWS-StartSSHSession", "Parameters": {"portNumber": ["22"]}}', 'https://ssm.eu-west-1.amazonaws.com']' returned non-zero exit status 2.
client_loop: send disconnect: Broken pipe
```

Session manager plugin version:
```
cat /usr/local/sessionmanagerplugin/VERSION
1.2.497.0
```

OS:
```
cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=22.04
DISTRIB_CODENAME=jammy
DISTRIB_DESCRIPTION="Ubuntu 22.04.3 LTS"
```