Update Errorf calls to be compliant with Go 1.24's vet checks

[jlamillan]

Updated Errorf calls to have format string to be compliant with Go 1.24's vet checks: https://go.dev/doc/go1.24#vet

See also #https://github.com/oracle/oci-go-sdk/issues/573

jlamillan-mac:oci-go-sdk JEMILLAN$ go version
go version go1.24.0 darwin/arm64
jlamillan-mac:oci-go-sdk JEMILLAN$ go vet -printf ./...

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