Run npm audit fix to address vulnerabilities

[drewish]

Update braces, cross-spawn, micromatch, and undici

Here's the npm audit before this PR is applied:

# npm audit report

braces  <3.0.3
Severity: high
Uncontrolled resource consumption in braces - https://github.com/advisories/GHSA-grv7-fg5c-xmjg
fix available via `npm audit fix`
node_modules/braces

cross-spawn  7.0.0 - 7.0.4
Severity: high
Regular Expression Denial of Service (ReDoS) in cross-spawn - https://github.com/advisories/GHSA-3xgq-45jj-v275
fix available via `npm audit fix`
node_modules/cross-spawn

micromatch  <4.0.8
Severity: moderate
Regular Expression Denial of Service (ReDoS) in micromatch - https://github.com/advisories/GHSA-952p-6rrq-rcjv
fix available via `npm audit fix`
node_modules/micromatch

undici  <=5.28.3 || 6.0.0 - 6.11.0
Undici's Proxy-Authorization header not cleared on cross-origin redirect for dispatch, request, stream, pipeline - https://github.com/advisories/GHSA-m4v8-wqvr-p9f7
Undici's Proxy-Authorization header not cleared on cross-origin redirect for dispatch, request, stream, pipeline - https://github.com/advisories/GHSA-m4v8-wqvr-p9f7
Undici's fetch with integrity option is too lax when algorithm is specified but hash value is in incorrect - https://github.com/advisories/GHSA-9qxr-qj54-h672
Undici's fetch with integrity option is too lax when algorithm is specified but hash value is in incorrect - https://github.com/advisories/GHSA-9qxr-qj54-h672
fix available via `npm audit fix`
node_modules/@actions/http-client/node_modules/undici
node_modules/undici

4 vulnerabilities (1 low, 1 moderate, 2 high)

To address all issues, run:
  npm audit fix

[drewish]

It might be worth turning on dependabot to automate a bit of this. This came to my attention when I tried to get approval to use the action from our security team.