Replace last github.com/goccy/go-yaml with go.yaml.in/yaml/v3 (#55582)

### What does this PR do?
Replace `github.com/goccy/go-yaml` with `go.yaml.in/yaml/v3` in the 3 test files that use it, and drop the now-unused dependency from `go.mod`.

### Motivation
Finish removing one of our many YAML dependencies, therefore completing:
- #46070.

`goccy/go-yaml`'s main [stated rationale](https://github.com/goccy/go-yaml#why-a-new-library) for existing was that `go-yaml/yaml` was unmaintained and offered no AST-level access for reversible transformations.

Both are addressed today: `go.yaml.in/yaml` is the actively maintained fork, and its `yaml.Node` type supports the same tag, comment, and style preserving round-trip that `scanner_test.go` needed `goccy`'s `ast` and `token` packages for.

### Additional Notes
As [spotted by Codex](#55582 (comment)), regenerating `testdata/symbols.yaml` was unavoidable because `go.yaml.in/yaml/v3`'s encoder has no public option to reproduce `goccy`'s exact output: there is no way to add artificial indentation to a root-level sequence, and its scalar quoting is more canonical than `goccy'`s, only quoting where the YAML spec actually requires it.

Co-authored-by: regis.desgroppes <regis.desgroppes@datadoghq.com>

Author: rdesgroppes

deps/go.MODULE.bazel

@@ -158,7 +158,6 @@ use_repo(
     "com_github_go_viper_mapstructure_v2",
     "com_github_go_zookeeper_zk",
     "com_github_gobwas_glob",
-    "com_github_goccy_go_yaml",
     "com_github_gocomply_scap",
     "com_github_godbus_dbus_v5",
     "com_github_godror_godror",

go.mod

@@ -280,7 +280,6 @@ require (
 	github.com/go-viper/mapstructure/v2 v2.5.0
 	github.com/go-zookeeper/zk v1.0.4
 	github.com/gobwas/glob v0.2.3
-	github.com/goccy/go-yaml v1.19.2
 	github.com/gocomply/scap v0.1.3
 	github.com/godbus/dbus/v5 v5.2.2
 	github.com/godror/godror v0.50.0
@@ -720,6 +719,7 @@ require (
 	github.com/go-test/deep v1.1.1 // indirect
 	github.com/gobuffalo/flect v1.0.3 // indirect
 	github.com/goccy/go-json v0.10.6 // indirect
+	github.com/goccy/go-yaml v1.19.2 // indirect
 	github.com/gocql/gocql v1.6.0 // indirect
 	github.com/godbus/dbus v4.1.0+incompatible // indirect
 	github.com/godror/knownpb v0.3.0 // indirect

pkg/dyninst/gosymname/BUILD.bazel

@@ -34,8 +34,8 @@ dd_agent_go_test(
     data = glob(["testdata/**"]),
     embed = [":gosymname"],
     deps = [
-        "@com_github_goccy_go_yaml//:go-yaml",
         "@com_github_stretchr_testify//assert",
         "@com_github_stretchr_testify//require",
+        "@in_yaml_go_yaml_v3//:yaml",
     ],
 )

pkg/dyninst/gosymname/fuzz_test.go

@@ -9,8 +9,8 @@ import (
 	"os"
 	"testing"
 
-	"github.com/goccy/go-yaml"
 	"github.com/stretchr/testify/require"
+	"go.yaml.in/yaml/v3"
 )
 
 func FuzzParse(f *testing.F) {

pkg/dyninst/gosymname/symbol_test.go

@@ -6,15 +6,16 @@
 package gosymname
 
 import (
+	"bytes"
 	"flag"
 	"fmt"
 	"os"
 	"strconv"
 	"testing"
 
-	"github.com/goccy/go-yaml"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"go.yaml.in/yaml/v3"
 )
 
 // ---------------------------------------------------------------------------
@@ -212,8 +213,12 @@ func TestSymbols(t *testing.T) {
 				Output: formatTestOutput(&s),
 			})
 		}
-		out, err := yaml.MarshalWithOptions(cases, yaml.IndentSequence(true))
-		require.NoError(t, err)
+		var buf bytes.Buffer
+		enc := yaml.NewEncoder(&buf)
+		enc.SetIndent(2)
+		require.NoError(t, enc.Encode(cases))
+		require.NoError(t, enc.Close())
+		out := buf.Bytes()
 		require.NoError(t, os.WriteFile(path, out, 0644))
 		t.Logf("rewrote %s with %d cases", path, len(cases))
 		return