fix: shelljs.homedir() is not a function

running `loadFromDefault` with wsl2 and the existing code never loads
the `.kube/config` from your home directory since shelljs.homedir() is
not a function. I tested using `~/.kube/config` using wsl2 and Ubuntu
20.04 and it works as expected.

Author: TattdCodeMonkey

src/config.ts

@@ -304,7 +304,7 @@ export class KubeConfig {
         if (process.platform === 'win32' && shelljs.which('wsl.exe')) {
             // TODO: Handle if someome set $KUBECONFIG in wsl here...
             try {
-                const result = execa.sync('wsl.exe', ['cat', shelljs.homedir() + '/.kube/config']);
+                const result = execa.sync('wsl.exe', ['cat', '~/.kube/config']);
                 if (result.exitCode === 0) {
                     this.loadFromString(result.stdout, opts);
                     return;