Can't compile KiteX examples code with Go 1.20

[haohu321]

Describe the bug

Can't compile KiteX examples code with Go 1.20

Details: I followed the instructions https://www.cloudwego.io/docs/kitex/getting-started/. When trying to compile the hello server & client code, I got the error from another package's go version check:

panic("Unsupported Go version. Supported versions are: 1.15, 1.16, 1.17, 1.18, 1.19") (no value) used as value

To Reproduce

1. Install Go environment 1.20.
2. cd kitex-examples/basic/server && go run .

Expected behavior

Server code runs.

Screenshots

Kitex version:

Repo: https://github.com/cloudwego/kitex-examples.git
Branch: main
SHA: 4331b96

Environment:

package main

GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/foo/Library/Caches/go-build"
GOENV="/Users/foo/Library/Application Support/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/foo/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/foo/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GOVCS=""
GOVERSION="go1.20"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/foo/fooWorkspace/goKitexExamples/kitex-examples/go.mod"
GOWORK=""
CGO_CFLAGS="-O2 -g"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-O2 -g"
CGO_FFLAGS="-O2 -g"
CGO_LDFLAGS="-O2 -g"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/h2/qd6vtkhn59dd5yzk3s4w0mbm0000gn/T/go-build3190407640=/tmp/go-build -gno-record-gcc-switches -fno-common"

Additional context
N/A

[felix021]

Thanks for your feedback.

We'll release a new version supporting 1.20 soon.

For temporary solution, you can replace with choleraehyq/pid@v0.0.16 & cloudwego/frugal@main

cloudwego/kitex#796