update for Go 1.18

mvdan · mvdan · commit 1e5d4ad0ac89 · 2022-03-16T15:21:53.000Z
While here, drop the FAQ about module support,
as it's already been the default for over a year,
and has been a default for a long time if a go.mod file exists.
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -4,7 +4,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.16.x, 1.17.x]
+        go-version: [1.17.x, 1.18.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: 1.17.x
+        go-version: 1.18.x
     - uses: actions/checkout@v3
     - uses: actions/cache@v2
       with:
diff --git a/README.md b/README.md
@@ -13,7 +13,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.16.x, 1.17.x]
+        go-version: [1.17.x, 1.18.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
@@ -39,11 +39,6 @@ Note that `name` fields are optional.
 
 ## FAQs
 
-#### What about module support?
-
-Go 1.16 and later will already use module mode by default.
-Go 1.12 and later do the same if a `go.mod` file is present.
-
 #### How do I set environment variables?
 
 They can be set up via `env` for an [entire
