Update Go version

Update build/test to use Go 1.20.

Signed-off-by: SuperQ <superq@gmail.com>

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     # Whenever the Go version is updated here, .promu.yml
     # should also be updated.
     container:
-      image: quay.io/prometheus/golang-builder:1.19-base
+      image: quay.io/prometheus/golang-builder:1.20-base
     steps:
       - uses: actions/checkout@v3
       - uses: prometheus/promci@v0.0.2
@@ -31,7 +31,7 @@ jobs:
     # Whenever the Go version is updated here, .promu.yml
     # should also be updated.
     container:
-      image: quay.io/prometheus/golang-builder:1.19-base
+      image: quay.io/prometheus/golang-builder:1.20-base
 
     steps:
       - uses: actions/checkout@v3
@@ -54,7 +54,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
-          go-version: '>=1.19 <1.20'
+          go-version: '>=1.20 <1.21'
       - run: |
           $TestTargets = go list ./... | Where-Object { $_ -NotMatch "(github.com/prometheus/prometheus/discovery.*|github.com/prometheus/prometheus/config|github.com/prometheus/prometheus/web)"}
           go test $TestTargets -vet=off -v

.github/workflows/codeql-analysis.yml

@@ -23,7 +23,7 @@ jobs:
         uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
-          go-version: '>=1.19 <1.20'
+          go-version: '>=1.20 <1.21'
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2

.promu.yml

@@ -1,7 +1,7 @@
 go:
     # Whenever the Go version is updated here,
     # .circle/config.yml should also be updated.
-    version: 1.19
+    version: 1.20
 repository:
     path: github.com/prometheus/prometheus
 build:

go.mod

@@ -1,6 +1,6 @@
 module github.com/prometheus/prometheus
 
-go 1.18
+go 1.19
 
 require (
 	github.com/Azure/azure-sdk-for-go v65.0.0+incompatible