Bumping to go-yaml 4-rc3

pkg/yqlib/doc/operators/anchor-and-alias-operators.md

@@ -191,13 +191,19 @@ Given a sample.yml file of:
 ```yaml
 f:
   a: &a cat
-  *a: b
+  *a : b
 ```
 then
 ```bash
 yq 'explode(.f)' sample.yml
 ```
 will output
+```yaml
+f:
+  a: cat
+  cat: b
+```
+
 ## Dereference and update a field
 Use explode with multiply to dereference an object
 
@@ -339,3 +345,139 @@ x: 1
 y: 2
 ```
 
+## FIXED: Explode with merge anchors
+Set `--yaml-fix-merge-anchor-to-spec=true` to get this correct merge behaviour (flag will default to true in late 2025).
+Observe that foobarList.b property is still foobarList_b.
+
+Given a sample.yml file of:
+```yaml
+foo: &foo
+  a: foo_a
+  thing: foo_thing
+  c: foo_c
+bar: &bar
+  b: bar_b
+  thing: bar_thing
+  c: bar_c
+foobarList:
+  b: foobarList_b
+  !!merge <<:
+    - *foo
+    - *bar
+  c: foobarList_c
+foobar:
+  c: foobar_c
+  !!merge <<: *foo
+  thing: foobar_thing
+```
+then
+```bash
+yq 'explode(.)' sample.yml
+```
+will output
+```yaml
+foo:
+  a: foo_a
+  thing: foo_thing
+  c: foo_c
+bar:
+  b: bar_b
+  thing: bar_thing
+  c: bar_c
+foobarList:
+  b: foobarList_b
+  a: foo_a
+  thing: foo_thing
+  c: foobarList_c
+foobar:
+  c: foobar_c
+  a: foo_a
+  thing: foobar_thing
+```
+
+## FIXED: Merge multiple maps
+Set `--yaml-fix-merge-anchor-to-spec=true` to get this correct merge behaviour (flag will default to true in late 2025).
+Taken from https://yaml.org/type/merge.html. Same values as legacy, but with the correct key order.
+
+Given a sample.yml file of:
+```yaml
+- &CENTER
+  x: 1
+  y: 2
+- &LEFT
+  x: 0
+  y: 2
+- &BIG
+  r: 10
+- &SMALL
+  r: 1
+- !!merge <<:
+    - *CENTER
+    - *BIG
+```
+then
+```bash
+yq '.[4] | explode(.)' sample.yml
+```
+will output
+```yaml
+x: 1
+y: 2
+r: 10
+```
+
+## FIXED: Override
+Set `--yaml-fix-merge-anchor-to-spec=true` to get this correct merge behaviour (flag will default to true in late 2025).
+Taken from https://yaml.org/type/merge.html. Same values as legacy, but with the correct key order.
+
+Given a sample.yml file of:
+```yaml
+- &CENTER
+  x: 1
+  y: 2
+- &LEFT
+  x: 0
+  y: 2
+- &BIG
+  r: 10
+- &SMALL
+  r: 1
+- !!merge <<:
+    - *BIG
+    - *LEFT
+    - *SMALL
+  x: 1
+```
+then
+```bash
+yq '.[4] | explode(.)' sample.yml
+```
+will output
+```yaml
+r: 10
+y: 2
+x: 1
+```
+
+## Exploding inline merge anchor
+Set `--yaml-fix-merge-anchor-to-spec=true` to get this correct merge behaviour (flag will default to true in late 2025).
+
+
+Given a sample.yml file of:
+```yaml
+a:
+  b: &b 42
+!!merge <<:
+  c: *b
+```
+then
+```bash
+yq 'explode(.) | sort_keys(.)' sample.yml
+```
+will output
+```yaml
+a:
+  b: 42
+c: 42
+```
+