ci update: jwx/v2 is using go 1.18+ type, set jwtauth pkg min to go 1.18 (#74)

.github/workflows/ci.yml

@@ -1,4 +1,13 @@
-on: [push, pull_request]
+on:
+  push:
+    branches: '**'
+    paths-ignore:
+      - 'docs/**'
+  pull_request:
+    branches: '**'
+    paths-ignore:
+      - 'docs/**'
+
 name: Test
 jobs:
   test:
@@ -12,7 +21,7 @@ jobs:
 
     strategy:
       matrix:
-        go-version: [1.16.x, 1.17.x, 1.18.x, 1.19.x]
+        go-version: [1.18.x, 1.19.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     runs-on: ${{ matrix.os }}

go.mod

@@ -1,8 +1,19 @@
 module github.com/go-chi/jwtauth/v5
 
-go 1.16
+go 1.18
 
 require (
 	github.com/go-chi/chi/v5 v5.0.7
 	github.com/lestrrat-go/jwx/v2 v2.0.6
 )
+
+require (
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0 // indirect
+	github.com/goccy/go-json v0.9.11 // indirect
+	github.com/lestrrat-go/blackmagic v1.0.1 // indirect
+	github.com/lestrrat-go/httpcc v1.0.1 // indirect
+	github.com/lestrrat-go/httprc v1.0.4 // indirect
+	github.com/lestrrat-go/iter v1.0.2 // indirect
+	github.com/lestrrat-go/option v1.0.0 // indirect
+	golang.org/x/crypto v0.0.0-20220427172511-eb4f295cb31f // indirect
+)