!chore(deps): set golang 1.21 minimum version

drop ci teting of golang 1.20

BREAKING CHANGE

.github/workflows/golangci-lint.yml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         go-version: [
                 # 1.19.x, # Ended 06 Sep 2023
-                1.20.x, # Ended 06 Feb 2024
+                # 1.20.x, # Ended 06 Feb 2024
                 1.21.x,
                 1.22.x,
                 ]

.github/workflows/test.yml

@@ -21,7 +21,7 @@ jobs:
                     # 1.17.x, # Ended 02 Aug 2022
                     # 1.18.x, # Ended 01 Feb 2023
                     # 1.19.x, # Ended 06 Sep 2023
-                    1.20.x, # Ended 06 Feb 2024
+                    # 1.20.x, # Ended 06 Feb 2024
                     1.21.x,
                     1.22.x,
                     ]
@@ -65,12 +65,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: ["1.20", "1.21", "1.22"]
+        go-version: ["1.21", "1.22"]
     steps:
       - uses: actions/checkout@v4
 
       - name: Test dockerfile 
         run: make docker_test_all
+        env:
+          GO_VERSION: ${{ matrix.go-version }}
 
   finish:
     needs: [test,test-containers]

go.mod

@@ -1,6 +1,6 @@
 module github.com/pact-foundation/pact-go/v2
 
-go 1.20
+go 1.21
 
 require (
 	github.com/golang/protobuf v1.5.4

go.sum

@@ -9,6 +9,7 @@ github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEW
 github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
 github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/hashicorp/go-version v1.7.0 h1:5tqGy27NaOTB8yJKUZELlFAS/LTKJkrmONwQKeRZfjY=
 github.com/hashicorp/go-version v1.7.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
 github.com/hashicorp/logutils v1.0.0 h1:dLEQVugN8vlakKOUE3ihGLTZJRB4j+M2cdTm/ORI65Y=