chore(deps): bump hiero-ledger/hiero-solo-action from 0.18.0 to 0.19.0

Bumps [hiero-ledger/hiero-solo-action](https://github.com/hiero-ledger/hiero-solo-action) from 0.18.0 to 0.19.0.
- [Release notes](https://github.com/hiero-ledger/hiero-solo-action/releases)
- [Commits](hiero-ledger/hiero-solo-action@692b186...328bc84)

---
updated-dependencies:
- dependency-name: hiero-ledger/hiero-solo-action
  dependency-version: 0.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/pr-check-secondary-examples.yml

@@ -34,7 +34,7 @@ jobs:
 
       - name: Prepare Hiero Solo
         id: solo
-        uses: hiero-ledger/hiero-solo-action@692b186bd2e4c8d46b9deb1c067dc6ddcf0abcd7 #v0.15.0
+        uses: hiero-ledger/hiero-solo-action@328bc84c3b00a990a151418144fd682a4eb76ea6 #v0.15.0
         with:
           installMirrorNode: true
       - name: Run Examples

.github/workflows/pr-check-secondary-unit-integration-test.yml

@@ -129,7 +129,7 @@ jobs:
 
       - name: Prepare Hiero Solo
         id: solo
-        uses: hiero-ledger/hiero-solo-action@692b186bd2e4c8d46b9deb1c067dc6ddcf0abcd7 # v0.15.0
+        uses: hiero-ledger/hiero-solo-action@328bc84c3b00a990a151418144fd682a4eb76ea6 # v0.15.0
         with:
           installMirrorNode: true