fix: close files in PCL binder (#15961)

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# Description

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Close files in PCL parser after parsing.

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---------

Signed-off-by: guoguangwu <[email protected]>
Co-authored-by: Justin Van Patten <[email protected]>

pkg/codegen/pcl/binder_component.go

@@ -22,6 +22,7 @@ import (
  "github.com/hashicorp/hcl/v2/hclsyntax"
  "github.com/pulumi/pulumi/pkg/v3/codegen/hcl2/model"
  syntax "github.com/pulumi/pulumi/pkg/v3/codegen/hcl2/syntax"
+ "github.com/pulumi/pulumi/sdk/v3/go/common/util/contract"
 )
 
 // componentVariableType returns the type of the variable of which the value is a component.
@@ -161,6 +162,7 @@ func ComponentProgramBinderFromFileSystem() ComponentProgramBinder {
  }
 
  err = parser.ParseFile(file, fileName)
+ contract.IgnoreError(file.Close())
  if err != nil {
  diagnostics = diagnostics.Append(errorf(nodeRange, err.Error()))
  return nil, diagnostics, err