updated go version and go.yml

Author: kellemNegasi

.github/workflows/go.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [ '1.22', '1.21', '1.20', '1.19', '1.18' ]
+        go: [ '1.23', '1.22', '1.21', '1.20', '1.19' ]
     steps:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2

go.mod

@@ -1,6 +1,6 @@
 module github.com/unidoc/unidoc-examples
 
-go 1.18
+go 1.19
 
 require (
 	cloud.google.com/go/kms v1.10.1