chore: explicitly cast and change tolerance

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: passed
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: passed
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/binomial/kurtosis/src/main.c

@@ -41,5 +41,5 @@ double stdlib_base_dists_binomial_kurtosis( const int32_t n, const double p ) {
 		return 0.0 / 0.0;
 	}
 	const double pq = p * ( 1.0 - p );
-	return ( 1.0 - ( 6.0 * pq ) ) / ( n * pq );
+	return ( 1.0 - ( 6.0 * pq ) ) / ( (double)n * pq );
 }

lib/node_modules/@stdlib/stats/base/dists/binomial/kurtosis/test/test.native.js

@@ -110,7 +110,7 @@ tape( 'the function returns the excess kurtosis of a binomial distribution', opt
 		}
 		else {
 			delta = abs( y - expected[i] );
-			tol = 100.0 * EPS * abs( expected[i] );
+			tol = 30.0 * EPS * abs( expected[i] );
 			t.strictEqual( delta <= tol, true, 'within tolerance. n: '+n[i]+'. p: '+p[i]+'. y: '+y+'. Expected: '+expected[i]+'. tol: '+tol+'. delta: '+delta+'.' );
 		}
 	}