Bump bootstrap from 5.1.2 to 5.1.3

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 5.1.2 to 5.1.3.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](twbs/bootstrap@v5.1.2...v5.1.3)

---
updated-dependencies:
- dependency-name: bootstrap
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -24,7 +24,7 @@
   },
   "dependencies": {
     "@11ty/eleventy": "1.0.0-canary.44",
-    "bootstrap": "5.1.2",
+    "bootstrap": "5.1.3",
     "bootstrap-icons": "1.5.0",
     "clean-css": "^5.2.1",
     "gulp": "^4.0.2",