Bump Go versions (#75)

* go-version: Pin to 1.20

* go.mod: Require Go 1.18

* ci: Test against Go 1.20

* ci: avoid testing on incompatible versions

.github/workflows/test.yml

@@ -25,10 +25,9 @@ jobs:
           - ubuntu-latest
           - macos-latest
         go:
-          - 1.16
-          - 1.17
-          - 1.18
-          - 1.19
+          - "1.18"
+          - "1.19"
+          - "1.20"
     steps:
       - name: Checkout
         uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # https://github.com/actions/checkout/releases/tag/v3.3.0

.go-version

@@ -1 +1 @@
-1.16
+1.20

go.mod

@@ -1,6 +1,6 @@
 module github.com/hashicorp/terraform-json
 
-go 1.13
+go 1.18
 
 require (
 	github.com/davecgh/go-spew v1.1.1
@@ -11,3 +11,8 @@ require (
 	github.com/zclconf/go-cty v1.10.0
 	github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b
 )
+
+require (
+	github.com/mitchellh/reflectwalk v1.0.2 // indirect
+	golang.org/x/text v0.3.8 // indirect
+)

go.sum

@@ -42,8 +42,9 @@ golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
-golang.org/x/text v0.3.5 h1:i6eZZ+zk0SOf0xgBpEpPD18qWcJda6q1sxt3S0kzyUQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=