build(deps): bump github.com/open-policy-agent/opa from 1.11.1 to 1.12.3

Bumps [github.com/open-policy-agent/opa](https://github.com/open-policy-agent/opa) from 1.11.1 to 1.12.3.
- [Release notes](https://github.com/open-policy-agent/opa/releases)
- [Changelog](https://github.com/open-policy-agent/opa/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-policy-agent/opa/compare/v1.11.1...v1.12.3)

---
updated-dependencies:
- dependency-name: github.com/open-policy-agent/opa
  dependency-version: 1.12.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/open-policy-agent/opa/internal/compiler/wasm/opa/callgraph.csv

@@ -719,6 +719,18 @@ opa_strings_upper,opa_abort
 opa_strings_upper,opa_unicode_to_upper
 opa_strings_upper,opa_realloc
 opa_strings_upper,opa_unicode_encode_utf8
+to_string,opa_value_type
+to_string,opa_string_terminated
+to_string,opa_value_dump
+to_string,opa_strlen
+to_string,opa_string_allocated
+opa_template_string,opa_value_type
+opa_template_string,opa_array_with_cap
+opa_template_string,to_string
+opa_template_string,opa_array_append
+opa_template_string,opa_malloc
+opa_template_string,memcpy
+opa_template_string,opa_string_allocated
 opa_types_is_number,opa_value_type
 opa_types_is_number,opa_boolean
 opa_types_is_string,opa_value_type

vendor/github.com/open-policy-agent/opa/internal/compiler/wasm/wasm.go

@@ -162,6 +162,7 @@ var builtinsFunctions = map[string]string{
 	ast.TrimRight.Name:                  "opa_strings_trim_right",
 	ast.TrimSuffix.Name:                 "opa_strings_trim_suffix",
 	ast.TrimSpace.Name:                  "opa_strings_trim_space",
+	ast.InternalTemplateString.Name:     "opa_template_string",
 	ast.NumbersRange.Name:               "opa_numbers_range",
 	ast.ToNumber.Name:                   "opa_to_number",
 	ast.WalkBuiltin.Name:                "opa_value_transitive_closure",

vendor/github.com/open-policy-agent/opa/internal/planner/planner.go

@@ -1768,7 +1768,7 @@ func (p *Planner) planRef(ref ast.Ref, iter planiter) error {
 		return errors.New("illegal ref: non-var head")
 	}
 
-	if head.Compare(ast.DefaultRootDocument.Value) == 0 {
+	if head.Equal(ast.DefaultRootDocument.Value) {
 		virtual := p.rules.Get(ref[0].Value)
 		base := &baseptr{local: p.vars.GetOrEmpty(ast.DefaultRootDocument.Value.(ast.Var))}
 		return p.planRefData(virtual, base, ref, 1, iter)

vendor/github.com/open-policy-agent/opa/internal/wasm/encoding/reader.go

@@ -83,7 +83,7 @@ func readModule(r io.Reader) (*module.Module, error) {
 
 	var m module.Module
 
-	if err := readSections(r, &m); err != nil && err != io.EOF {
+	if err := readSections(r, &m); err != io.EOF {
 		return nil, err
 	}