update go 1.20 on go.mod, docs & on ci

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v4
       with:
-        go-version: 1.19
+        go-version: 1.20
       id: go
 
     - name: Check out code into the Go module directory
@@ -38,7 +38,7 @@ jobs:
             apt update
             apt install -y make gcc libc-dev git
       if: github.actor == 'nektos/act'
-  
+
     - name: Test
       run: make test
 

.github/workflows/codeql-analysis.yml

@@ -30,7 +30,7 @@ jobs:
     - name: Install go version
       uses: actions/setup-go@v3
       with:
-        go-version: '^1.19'
+        go-version: '^1.20'
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/docs.yml

@@ -26,7 +26,7 @@ jobs:
 
       - uses: actions/setup-go@v4
         with:
-          go-version: ^1.19
+          go-version: ^1.20
 
       - run: |
           pip install -r docs/scripts/requirements.txt

docs/contributing/getting-started.md

@@ -1,7 +1,7 @@
 # Quick Start
 
 - [Git](https://git-scm.com/downloads)
-- [Go 1.19+](https://golang.org/dl/)
+- [Go 1.20+](https://golang.org/dl/)
 - [Go modules](https://github.com/golang/go/wiki/Modules)
 - [golangci-lint](https://github.com/golangci/golangci-lint)
 - [Docker](https://docs.docker.com/install/)

go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/external-dns
 
-go 1.19
+go 1.20
 
 require (
 	cloud.google.com/go/compute/metadata v0.2.3