Add support for Go 1.21 and drop support for Go 1.19

Also update Github Actions

.github/workflows/go.yml

@@ -12,28 +12,28 @@ jobs:
 
     strategy:
       matrix:
-        go: [ '1.19', '1.20' ]
+        go: [ '1.20', '1.21' ]
 
     name: Go ${{ matrix.go }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v5
       with:
         go-version: ${{ matrix.go }}
 
     - name: golangci-lint
-      uses: golangci/golangci-lint-action@v2
+      uses: golangci/golangci-lint-action@v3
       with:
-        version: v1.51.2
+        version: latest
 
     - name: Test
       run: go test -v -race -coverprofile=coverage.txt -covermode=atomic ./...
 
     - name: Codecov
-      uses: codecov/codecov-action@v2
+      uses: codecov/codecov-action@v3
       with:
         token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
         files: ./coverage.txt

README.md

@@ -1,6 +1,6 @@
 # satomic
 
-![GitHub Workflow Status (branch)](https://img.shields.io/github/actions/workflow/status/dhui/satomic/go.yml?branch=master) [![Code Coverage](https://img.shields.io/codecov/c/github/dhui/satomic.svg)](https://codecov.io/gh/dhui/satomic) [![GoDoc](https://godoc.org/github.com/dhui/satomic?status.svg)](https://godoc.org/github.com/dhui/satomic) [![Go Report Card](https://goreportcard.com/badge/github.com/dhui/satomic)](https://goreportcard.com/report/github.com/dhui/satomic) [![GitHub Release](https://img.shields.io/github/release/dhui/satomic/all.svg)](https://github.com/dhui/satomic/releases) ![Supported Go versions](https://img.shields.io/badge/Go-1.19%2C%201.20-lightgrey.svg)
+![GitHub Workflow Status (branch)](https://img.shields.io/github/actions/workflow/status/dhui/satomic/go.yml?branch=master) [![Code Coverage](https://img.shields.io/codecov/c/github/dhui/satomic.svg)](https://codecov.io/gh/dhui/satomic) [![GoDoc](https://godoc.org/github.com/dhui/satomic?status.svg)](https://godoc.org/github.com/dhui/satomic) [![Go Report Card](https://goreportcard.com/badge/github.com/dhui/satomic)](https://goreportcard.com/report/github.com/dhui/satomic) [![GitHub Release](https://img.shields.io/github/release/dhui/satomic/all.svg)](https://github.com/dhui/satomic/releases) ![Supported Go versions](https://img.shields.io/badge/Go-1.20%2C%201.21-lightgrey.svg)
 
 satomic is a Golang package that makes managing nested SQL transactions/savepoints easier