fix: correct require paths for inline lazy-loading functions

Fix require paths in dlx-package.ts and versions.ts to use './external/'
instead of '../external/' since the files are in src/ and external/ is
at src/external/. After compilation to dist/, both remain at the same
level (dist/dlx-package.js and dist/external/).

Author: jdalton

src/dlx-package.ts

@@ -47,7 +47,7 @@ let _npmPackageArg: typeof import('npm-package-arg') | undefined
 /*@__NO_SIDE_EFFECTS__*/
 function getNpmPackageArg() {
   if (_npmPackageArg === undefined) {
-    _npmPackageArg = /*@__PURE__*/ require('../external/npm-package-arg')
+    _npmPackageArg = /*@__PURE__*/ require('./external/npm-package-arg')
   }
   return _npmPackageArg as typeof import('npm-package-arg')
 }
@@ -56,7 +56,7 @@ let _pacote: typeof import('pacote') | undefined
 /*@__NO_SIDE_EFFECTS__*/
 function getPacote() {
   if (_pacote === undefined) {
-    _pacote = /*@__PURE__*/ require('../external/pacote')
+    _pacote = /*@__PURE__*/ require('./external/pacote')
   }
   return _pacote as typeof import('pacote')
 }

src/versions.ts

@@ -5,7 +5,7 @@ let _semver: typeof import('semver') | undefined
 function getSemver() {
   if (_semver === undefined) {
     // The 'semver' package is browser safe.
-    _semver = /*@__PURE__*/ require('../external/semver')
+    _semver = /*@__PURE__*/ require('./external/semver')
   }
   return _semver as typeof import('semver')
 }