Use an absolute NODE_EXTRA_CA_CERTS path in test

Remove some complexity around correctly handling a relative path to
extra CA certs by setting it to an absolute path.

package.json

@@ -7,7 +7,7 @@
 		"build": "tsc --build",
 		"watch": "tsc --build --watch",
 		"build-mod": "pnpm run -r build-mod --output-dir ../../dist",
-		"test": "pnpm run build && NODE_EXTRA_CA_CERTS=test/file/tls/cert.pem mocha --enable-source-maps --check-leaks -R spec --recursive test \"plugins/*/test/**\" --exclude \"test/manual/**\"",
+		"test": "pnpm run build && NODE_EXTRA_CA_CERTS=$(pwd)/test/file/tls/cert.pem mocha --enable-source-maps --check-leaks -R spec --recursive test \"plugins/*/test/**\" --exclude \"test/manual/**\"",
 		"silent-test": "SILENT_TEST=y pnpm test",
 		"fast-test": "FAST_TEST=y pnpm test",
 		"cover": "nyc pnpm test",

test/integration/index.js

@@ -197,12 +197,7 @@ let controlConfigPath = path.join("temp", "test", "config-control.json");
 function childOptions(options) {
 	return {
 		cwd: path.join("temp", "test"),
-		env: {
-			...process.env,
-			NODE_EXTRA_CA_CERTS: process.env.NODE_EXTRA_CA_CERTS
-				? path.resolve(process.env.NODE_EXTRA_CA_CERTS)
-				: undefined,
-		},
+		env: { ...process.env },
 		...options,
 	};
 }