build(deps): bump lkstrp/pypsa-validator (#1390)

Bumps the github-actions group with 1 update in the / directory: [lkstrp/pypsa-validator](https://github.com/lkstrp/pypsa-validator).


Updates `lkstrp/pypsa-validator` from 0.2.2 to 0.2.3
- [Release notes](https://github.com/lkstrp/pypsa-validator/releases)
- [Commits](PyPSA/pypsa-validator@v0.2.2...v0.2.3)

---
updated-dependencies:
- dependency-name: lkstrp/pypsa-validator
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/validate.yaml

@@ -16,7 +16,7 @@ jobs:
     if: github.event.pull_request.head.repo.full_name == github.repository
     runs-on: self-hosted
     steps:
-    - uses: lkstrp/pypsa-validator@v0.2.2
+    - uses: lkstrp/pypsa-validator@v0.2.3
       with:
         step: run-self-hosted-validation
         env_file: envs/environment.yaml
@@ -30,7 +30,7 @@ jobs:
     needs: run-validation
     runs-on: ubuntu-latest
     steps:
-    - uses: lkstrp/pypsa-validator@v0.2.2
+    - uses: lkstrp/pypsa-validator@v0.2.3
       with:
         step: create-comment
         snakemake_config: config/test/config.validator.yaml