Update CI

The macos-latest runners are now arm64, and there wasn't a golang
version built for arm64 before 1.19.x. Also, the latest Vanguard commit
uses 'tls.CipherSuites', which didn't exist before 1.14, so drop support
(i.e. testing) for anything before then.

Author: aclindsa

.github/workflows/test.yml

@@ -6,12 +6,17 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.13.x, 1.18.x, 1.20.x]
+        go-version: [1.19.x, 1.22.x, 1.24.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
+        include:
+          - os: ubuntu-latest
+            go-version: 1.14.x
+          - os: windows-latest
+            go-version: 1.14.x
     runs-on: ${{ matrix.os }}
     steps:
     - name: Install Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v5
       with:
         go-version: ${{ matrix.go-version }}
     - name: Checkout code