ci: fix go version to 1.22

Signed-off-by: Shengqi Chen <harry-chen@outlook.com>

.github/workflows/tunasync.yml

@@ -15,7 +15,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: 'stable'
+        go-version: '^1.22'
       id: go
 
     - name: Get dependencies
@@ -56,7 +56,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: 'stable'
+        go-version: '^1.22'
       id: go
 
     - name: Run Unit tests.