chore: bump Go

Author: vmihailenco

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: [1.18.x, 1.19.x]
+        go-version: [1.21.x]
 
     steps:
       - name: Set up ${{ matrix.go-version }}