Adding Go 1.21.x for CI coverage (#2697)

* Update build.yml

Add support to go 1.21.x

* Update doctests.yaml

---------

Co-authored-by: ofekshenawa <[email protected]>

Author: peczenyj

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.19.x, 1.20.x]
+        go-version: [1.19.x, 1.20.x, 1.21.x]
 
     services:
       redis:

.github/workflows/doctests.yaml

@@ -25,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [ "1.18", "1.19", "1.20" ]
+        go-version: [ "1.18", "1.19", "1.20", "1.21" ]
 
     steps:
       - name: Set up ${{ matrix.go-version }}
@@ -38,4 +38,4 @@ jobs:
 
       - name: Test doc examples
         working-directory: ./doctests
-        run: go test
+        run: go test