Updating go version to 1.18 (#27)

* Updating go version to 1.18

* go mod tidy

.github/workflows/go.yml

@@ -11,7 +11,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17
+        go-version: 1.18
 
     - name: Build
       run: go build -v ./...

go.mod

@@ -1,10 +1,14 @@
 module github.com/nikunjy/rules
 
-go 1.16
+go 1.18
 
 require (
-	github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220415221154-79c36419192d // indirect
+	github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220415221154-79c36419192d
 	github.com/blang/semver v3.5.1+incompatible
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/stretchr/testify v1.3.0
 )
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+)

go.sum

@@ -1,5 +1,3 @@
-github.com/antlr/antlr4 v0.0.0-20181218183524-be58ebffde8e h1:yxMh4HIdsSh2EqxUESWvzszYMNzOugRyYCeohfwNULM=
-github.com/antlr/antlr4 v0.0.0-20181218183524-be58ebffde8e/go.mod h1:T7PbCXFs94rrTttyxjbyT5+/1V8T2TYDejxUfHJjw1Y=
 github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220415221154-79c36419192d h1:Kts4bTFz6tSE4bPFhcZxpCafiBnSOPSnUaame7SqSDc=
 github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220415221154-79c36419192d/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY=
 github.com/blang/semver v3.5.1+incompatible h1:cQNTCjp13qL8KC3Nbxr/y2Bqb63oX6wdnnjpJbkM4JQ=