Downgrade setup-go to v5 on ARMv7

It has been accidentally bumped to v6 in some workflows for ARM, and
it turns out that setup-go forgot to bump the node version to 24 until
v6.2.0. This meant that the mistake wasn't discovered until that version
was released yesterday.

Fixes: 498b323 ("Bump setup-go to v6 (except for ARMv7)")
Signed-off-by: Tom Wieczorek <twieczorek@mirantis.com>

Author: twz123

.github/workflows/go.yml

@@ -309,8 +309,7 @@ jobs:
         run: .github/workflows/prepare-build-env.sh
 
       - name: Set up Go
-        # https://github.com/actions/setup-go/pull/666
-        uses: actions/setup-go@b551c4cd70271da7ce09faf55f722b5e270c54d1
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ env.GO_VERSION }}
           cache: false
@@ -416,7 +415,7 @@ jobs:
         run: .github/workflows/prepare-build-env.sh
 
       - name: Set up Go
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ env.GO_VERSION }}
           cache: false

.github/workflows/release.yml

@@ -399,7 +399,7 @@ jobs:
           cat k0s.sig
 
       - name: Set up Go for smoke tests
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ env.GO_VERSION }}
           cache: false