chore: bump Go to 1.20

Author: GGabriele

.github/workflows/codeql-analysis.yml

@@ -40,11 +40,11 @@ jobs:
     steps:
     - name: Checkout repository
       uses: actions/checkout@v3
-      
+
     - name: Setup go
       uses: actions/setup-go@v4
       with:
-        go-version: 1.18
+        go-version: '^1.20'
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/integration-enterprise-nightly.yaml

@@ -30,7 +30,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v4
         with:
-          go-version: '^1.18'
+          go-version: '^1.20'
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Login to Docker Hub

.github/workflows/integration-enterprise.yaml

@@ -32,7 +32,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v4
         with:
-          go-version: '^1.18'
+          go-version: '^1.20'
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Login to Docker Hub

.github/workflows/integration-konnect.yaml

@@ -14,7 +14,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v4
         with:
-          go-version: '^1.18'
+          go-version: '^1.20'
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Run integration tests

.github/workflows/integration.yaml

@@ -32,7 +32,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v4
         with:
-          go-version: '^1.18'
+          go-version: '^1.20'
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Setup Kong

.github/workflows/release.yaml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.18
+          go-version: 1.20
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v4
         with:

.github/workflows/test.yaml

@@ -13,7 +13,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v4
         with:
-          go-version: '^1.18'
+          go-version: '^1.20'
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Setup golangci-lint

go.mod

@@ -1,6 +1,6 @@
 module github.com/kong/deck
 
-go 1.18
+go 1.20
 
 replace github.com/yudai/gojsondiff v1.0.0 => github.com/Kong/gojsondiff v1.3.0