chore(deps): update actions/setup-go action to v6

Author: renovate-bot

.github/workflows/conformance.yml

@@ -36,7 +36,7 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
     - name: Setup Go
-      uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+      uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0
       with:
         go-version: '1.24'
         check-latest: true