Bump the prod-minor-updates group across 1 directory with 3 updates

Bumps the prod-minor-updates group with 3 updates in the / directory: [pg](https://github.com/brianc/node-postgres/tree/HEAD/packages/pg), [posthog-node](https://github.com/PostHog/posthog-js/tree/HEAD/packages/node) and [tailwind-merge](https://github.com/dcastil/tailwind-merge).


Updates `pg` from 8.18.0 to 8.19.0
- [Changelog](https://github.com/brianc/node-postgres/blob/master/CHANGELOG.md)
- [Commits](https://github.com/brianc/node-postgres/commits/pg@8.19.0/packages/pg)

Updates `posthog-node` from 5.24.15 to 5.26.0
- [Release notes](https://github.com/PostHog/posthog-js/releases)
- [Changelog](https://github.com/PostHog/posthog-js/blob/main/packages/node/CHANGELOG.md)
- [Commits](https://github.com/PostHog/posthog-js/commits/posthog-node@5.26.0/packages/node)

Updates `tailwind-merge` from 3.4.0 to 3.5.0
- [Release notes](https://github.com/dcastil/tailwind-merge/releases)
- [Commits](https://github.com/dcastil/tailwind-merge/compare/v3.4.0...v3.5.0)

---
updated-dependencies:
- dependency-name: pg
  dependency-version: 8.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: prod-minor-updates
- dependency-name: posthog-node
  dependency-version: 5.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: prod-minor-updates
- dependency-name: tailwind-merge
  dependency-version: 3.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: prod-minor-updates
...

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

package.json

@@ -99,8 +99,8 @@
         "node-cache": "5.1.2",
         "nodemailer": "8.0.1",
         "oslo": "1.2.1",
-        "pg": "8.18.0",
-        "posthog-node": "5.24.15",
+        "pg": "8.19.0",
+        "posthog-node": "5.26.0",
         "qrcode.react": "4.2.0",
         "react": "19.2.4",
         "react-day-picker": "9.13.2",
@@ -115,7 +115,7 @@
         "sshpk": "^1.18.0",
         "stripe": "20.3.1",
         "swagger-ui-express": "5.0.1",
-        "tailwind-merge": "3.4.0",
+        "tailwind-merge": "3.5.0",
         "topojson-client": "3.1.0",
         "tw-animate-css": "1.4.0",
         "use-debounce": "^10.1.0",