Add go 1.26 to the supported versions

Author: tucksaun

.github/workflows/test.yaml

@@ -27,6 +27,7 @@ jobs:
         - '1.23'
         - '1.24'
         - '1.25'
+        - '1.26'
     name: Go ${{ matrix.go }} test
     steps:
       - uses: actions/checkout@v2