Update dependency jdx/mise to v2026.5.18 (#296)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/actions/mise-project-setup/action.yaml

@@ -14,7 +14,7 @@ runs:
       env:
         CACHE_MODE: ${{ inputs.cache-mode }}
         # renovate: datasource=github-releases depName=jdx/mise
-        MISE_VERSION: v2026.4.28
+        MISE_VERSION: v2026.5.18
       run: |
         # Initialize mise-project-setup action
         "${GITHUB_ACTION_PATH}/init.sh"