add Go 1.20, drop 1.18

Author: mvdan

.github/workflows/test.yml

@@ -4,7 +4,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.18.x, 1.19.x]
+        go-version: [1.19.x, 1.20.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
@@ -19,7 +19,7 @@ jobs:
     steps:
     - uses: actions/setup-go@v3
       with:
-        go-version: 1.19.x
+        go-version: 1.20.x
     - uses: actions/checkout@v3
     - uses: actions/cache@v3
       with:

README.md

@@ -13,7 +13,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.18.x, 1.19.x]
+        go-version: [1.19.x, 1.20.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:

go.mod

@@ -1,6 +1,6 @@
-module dummy.module/actions
+module mod.test/actions
 
-go 1.18
+go 1.19
 
 require rsc.io/quote v1.5.2