CI: update golangci-lint version

The latest version is v1.42.1 so move to use that. Drop "prealloc"
from the list of "could be enabled later" after evaluating its
usefulness and based on the golangci-lint suggestion:

"XXX: we don't recommend using this linter before doing performance profiling.
For most programs usage of prealloc will be a premature optimization."

Signed-off-by: Mikko Ylinen <mikko.ylinen@intel.com>

.golangci.yaml

@@ -24,6 +24,5 @@ linters:
 
     # Could be enabled later:
     # - gocyclo
-    # - prealloc
     # - maligned
     # - gosec

.semaphore/semaphore.yml

@@ -23,7 +23,7 @@ blocks:
           - sudo mkdir -p /usr/local/golang/1.17 && curl -fL "https://golang.org/dl/go1.17.linux-amd64.tar.gz" | sudo tar -xz -C /usr/local/golang/1.17
           - sem-version go 1.17
           - go install github.com/mattn/goveralls@latest
-          - curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.38.0
+          - curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.42.1
           - export PATH="$PATH:$(go env GOPATH)/bin"
           - cache restore
           - go mod tidy