Update dependency go to v1.26.3 (#35)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/actions.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v6.4.0
         with:
-          go-version: '1.25.7'
+          go-version: '1.26.3'
 
       - name: Check go mod tidy
         run: |
@@ -50,7 +50,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v6.4.0
         with:
-          go-version: '1.25.7'
+          go-version: '1.26.3'
 
       - name: Run tests
         run: go test -coverprofile=cover.out ./...