@actions/glob is too greedy

Describe the bug
@actions/glob with ./some/path/* expands recursively, but it shouldn't

To Reproduce
Open List packages:
https://github.com/KidsKilla/glob-issue-example/runs/8038474520?check_suite_focus=true
the code of actions/github-script@v6:

          const path = require('path');
          const inputsGlob = '/packages/*';
          console.log('inputs.glob', inputsGlob);

          const globber = await glob.create(inputsGlob, {followSymbolicLinks: false});
          const fullPaths = await globber.glob();
          console.log('fullPaths\n', fullPaths.join('\n'));
          core.setOutput("fullPaths", JSON.stringify(fullPaths));

          const baseNames = fullPaths.map(f => path.basename(f));
          console.log('baseNames\n', baseNames.join('\n'));
          core.setOutput("baseNames", JSON.stringify(baseNames));

Expected behavior
I expect there to be only

/home/runner/work/glob-issue-example/glob-issue-example/packages/a
/home/runner/work/glob-issue-example/glob-issue-example/packages/b
/home/runner/work/glob-issue-example/glob-issue-example/packages/c

but I see instead:

/home/runner/work/glob-issue-example/glob-issue-example/packages/a
/home/runner/work/glob-issue-example/glob-issue-example/packages/a/a.js
/home/runner/work/glob-issue-example/glob-issue-example/packages/b
/home/runner/work/glob-issue-example/glob-issue-example/packages/b/b.js
/home/runner/work/glob-issue-example/glob-issue-example/packages/b/bb.js
/home/runner/work/glob-issue-example/glob-issue-example/packages/c
/home/runner/work/glob-issue-example/glob-issue-example/packages/c/xxx
/home/runner/work/glob-issue-example/glob-issue-example/packages/c/xxx/xxx.js

Desktop (please complete the following information):
runs-on: ubuntu-20.04

Start by reproducing the @actions/glob call from the List packages workflow and compare the output of glob.create('/packages/*', {followSymbolicLinks: false}) with the expected paths. Trace the glob implementation from glob.create to determine why nested files are returned, then verify that only the immediate package entries are listed.