Adjust integration tests for Node.js 12.17 supporting ESM out of the box

Author: novemberborn

test-tap/integration/assorted.js

@@ -166,7 +166,7 @@ test('selects .cjs test files', t => {
 
 test('load .mjs test files (when node supports it)', t => {
 	execCli('mjs.mjs', (err, stdout) => {
-		if (Number.parseFloat(process.version.slice(1)) >= 13) {
+		if (Number.parseFloat(process.version.slice(1)) >= 12.17) {
 			t.ifError(err);
 			t.match(stdout, /1 test passed/);
 			t.end();
@@ -180,7 +180,7 @@ test('load .mjs test files (when node supports it)', t => {
 
 test('load .js test files as ESM modules (when node supports it)', t => {
 	execCli('test.js', {dirname: 'fixture/pkg-type-module'}, (err, stdout) => {
-		if (Number.parseFloat(process.version.slice(1)) >= 13) {
+		if (Number.parseFloat(process.version.slice(1)) >= 12.17) {
 			t.ifError(err);
 			t.match(stdout, /1 test passed/);
 			t.end();