test: disable cgo in go test function

[kruskall]

Disable cgo in go test function to ensure there are no glibc/ABI compatibility issues between the build host and the target Lambda execution environment.

Similar to #292

Discovered while testing #347

/var/task/main: /lib64/libc.so.6: version `GLIBC_2.32' not found (required by /var/task/main)
/var/task/main: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by /var/task/main)

[ghost]

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Build stats

• Start Time: 2022-12-05T04:32:10.287+0000

• Duration: 8 min 16 sec

Test stats 🧪

Test	Results
Failed	0
Passed	204
Skipped	2
Total	206

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