Update Go version to 1.20

Author: epapbak

.github/workflows/gh-pages.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.18'
+          go-version: '1.20'
       - name: Generate docgo and literate
         run: make godoc
       - name: Build with Jekyll

.github/workflows/gotests.yaml

@@ -10,8 +10,6 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - "1.18"
-          - "1.19"
           - "1.20"
           - "1.21"
     name: Tests for Go ${{ matrix.go-version}}

.github/workflows/linters.yaml

@@ -10,8 +10,6 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - "1.18"
-          - "1.19"
           - "1.20"
           - "1.21"
     name: Linters for Go ${{ matrix.go-version}}

go.mod

@@ -1,6 +1,6 @@
 module github.com/RedHatInsights/insights-operator-utils
 
-go 1.18
+go 1.20
 
 require (
 	github.com/RedHatInsights/cloudwatch v0.0.0-20210111105023-1df2bdfe3291