[DX-820] Fix security vulnerabilities (#2660)

* build(deps): bump version of npm from 11.6.2 to 11.12.0.
resolves:
3 high security vulnerabilities:
  @isaacs/brace-expansion has Uncontrolled Resource Consumption - GHSA-7h2j-956f-4vf2
  diff  6.0.0 - 8.0.2
  minimatch has a ReDoS via repeated wildcards with non-matching literal in pattern - GHSA-3ppc-4f35-3m26
  node-tar has a race condition leading to uninitialized memory exposure - GHSA-29xp-372q-xqph

* build(deps): ran npm audit

* ci(github-actions): add concurrency rule to prevent duplicate gha runs

Author: ethan-ozelius-contentful

.github/workflows/main.yaml

@@ -8,6 +8,10 @@ on:
   pull_request:
     branches: ['**']
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     uses: ./.github/workflows/build.yaml