Fix --version flag

The recent PR pulsar-edit#100 made me want to check this command and I noticed
I messed up at two places to make this work.
Rather obvious fixes for a fortunate catch...

src/apm-cli.js

@@ -121,9 +121,9 @@ async function printVersions(args) {
     const npmVersion = require("npm/package.json").version ?? "";
     const nodeVersion = process.versions.node ?? "";
 
-    const pythonVersion = await getPythonVersion();
-    const gitVersion = await git.getGitVersion();
-    const atomVersion = await getAtomVersion();
+    let pythonVersion = await getPythonVersion();
+    let gitVersion = await git.getGitVersion();
+    let atomVersion = await getAtomVersion();
     let versions;
     if (args.json) {
       versions = {

src/git.js

@@ -66,7 +66,7 @@ exports.getGitVersion = () => {
     userconfig: config.getUserConfigPath(),
     globalconfig: config.getGlobalConfigPath()
   };
-  return new Promise((resolve, _reject => {
+  return new Promise((resolve, _reject) => {
     npm.load(npmOptions, () => {
       const git = npm.config.get('git') ?? 'git';
       exports.addGitToEnv(process.env);
@@ -85,5 +85,5 @@ exports.getGitVersion = () => {
         resolve(version);
       });
     });
-  }));
+  });
 };