test: fix dtypes

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
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  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
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    status: na
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    status: na
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    status: na
  - task: lint_c_src
    status: na
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    status: na
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    status: na
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    status: na
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  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/ndarray/concat/test/test.assign.js

@@ -369,15 +369,15 @@ tape( 'the function throws an error if provided a second argument having an inva
 	values = [
 		[
 			empty( [ 2 ], {
-				'dtype': 'float32'
+				'dtype': 'float64'
 			}),
 			empty( [ 2 ], {
 				'dtype': 'float64'
 			})
 		]
 	];
 	out = zeros( [ 10 ], {
-		'dtype': 'bool'
+		'dtype': 'float64'
 	});
 
 	for ( i = 0; i < values.length; i++ ) {
@@ -400,15 +400,15 @@ tape( 'the function throws an error if provided a second argument having an inva
 	values = [
 		[
 			empty( [ 2 ], {
-				'dtype': 'float32'
+				'dtype': 'float64'
 			}),
 			empty( [ 2 ], {
 				'dtype': 'float64'
 			})
 		]
 	];
 	out = zeros( [ 10 ], {
-		'dtype': 'bool'
+		'dtype': 'float64'
 	});
 
 	for ( i = 0; i < values.length; i++ ) {