chore: update to Go 1.25.6 and coder/preview to 1.08 (cherry 2.29) (#23228)

- Update Go version from 1.24.11 to 1.25.6
- Remove dependency on `moby` for `namesgenerator`
- Disable any use of trivy in zizmor GH action linting
(https://github.com/coder/coder/pull/23228/commits/17532ef2a8e40784499c36d3e7b871a2109d9bf2)

---------


(cherry picked from commit 3ee4f6d0ec)
(cherry picked from commit
https://github.com/coder/coder/commit/091d31224d2fe00d83695adcc53a225842dbb8d3)
(cherry picked from commit
https://github.com/coder/coder/commit/b44a421412a12ef7222322c68109426fb1f65286)

---------

Co-authored-by: Danny Kopping <danny@coder.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Zach <3724288+zedkipp@users.noreply.github.com>

coderd/coderdtest/coderdtest_test.go

@@ -1,8 +1,11 @@
 package coderdtest_test
 
 import (
+	"strings"
 	"testing"
+	"unicode"
 
+	"github.com/stretchr/testify/require"
 	"go.uber.org/goleak"
 
 	"github.com/coder/coder/v2/coderd/coderdtest"
@@ -28,3 +31,22 @@ func TestNew(t *testing.T) {
 	_, _ = coderdtest.NewGoogleInstanceIdentity(t, "example", false)
 	_, _ = coderdtest.NewAWSInstanceIdentity(t, "an-instance")
 }
+
+func TestRandomName(t *testing.T) {
+	t.Parallel()
+
+	for range 10 {
+		name := coderdtest.RandomName(t)
+
+		require.NotEmpty(t, name, "name should not be empty")
+		require.NotContains(t, name, "_", "name should not contain underscores")
+
+		// Should be title cased (e.g., "Happy Einstein").
+		words := strings.Split(name, " ")
+		require.Len(t, words, 2, "name should have exactly two words")
+		for _, word := range words {
+			firstRune := []rune(word)[0]
+			require.True(t, unicode.IsUpper(firstRune), "word %q should start with uppercase letter", word)
+		}
+	}
+}