Upgrade to Go 1.19

This was mainly done to be able to use slices.Equal(), which was first
introduced in Go 1.18. And since there are no breaking changes between
1.19 and 1.18, I thought why not go directly for 1.19

.github/workflows/release.yaml

@@ -13,7 +13,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.18.3
+          go-version: 1.19.0
       - name: GoReleaser
         uses: goreleaser/goreleaser-action@v2
         with:

.github/workflows/test.yaml

@@ -4,7 +4,7 @@ jobs:
   unit-test:
     strategy:
       matrix:
-        go: [1.18.3]
+        go: [1.19.0]
     runs-on: ubuntu-latest
     name: unit -> go ${{ matrix.go }}
     steps:
@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        go: [1.18.3]
+        go: [1.19.0]
     runs-on: ${{ matrix.os }}
     name: integration -> ${{ matrix.os }} / go ${{ matrix.go }}
     steps:
@@ -42,7 +42,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.17.6 # for now we can keep this as a fixed version
+          go-version: 1.19.0 # for now we can keep this as a fixed version
       - name: Install zsh # until https://github.com/actions/virtual-environments/issues/4849 is resolved
         run: sudo apt-get update; sudo apt-get install zsh
       - name: Install konf-go

go.mod

@@ -1,6 +1,6 @@
 module github.com/simontheleg/konf-go
 
-go 1.17
+go 1.19
 
 require (
 	github.com/google/go-cmp v0.5.5