fix govet issue and pin golangci-lint version for CI checks #112
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This PR fixes a go vet lint issue which started to surface in the main branch on the latest golangci-lint version. Since we don't pin the version of golangci-lint in our GitHub action, there is no guarantee of CI check stability as the latest stable release of golangci-lint is always pulled at the time of running the CI. This PR solves this problem by pinning the version of golangc-lint so that the CI checks are stable and consistent