chore(deps): bump the actions-prepare-jmeter group

Bumps the actions-prepare-jmeter group in /.github/actions/prepare-jmeter with 2 updates: [actions/download-artifact](https://github.com/actions/download-artifact) and [actions/setup-java](https://github.com/actions/setup-java).


Updates `actions/download-artifact` from 4.1.2 to 4.1.4
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/eaceaf801fd36c7dee90939fad912460b18a1ffe...c850b930e6ba138125429b7e5c93fc707a7f8427)

Updates `actions/setup-java` from 4.0.0 to 4.1.0
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](https://github.com/actions/setup-java/compare/387ac29b308b003ca37ba93a6cab5eb57c8f5f93...9704b39bf258b59bc04b50fa2dd55e9ed76b47a8)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions-prepare-jmeter
- dependency-name: actions/setup-java
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions-prepare-jmeter
...

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

.github/actions/prepare-jmeter/action.yaml

@@ -8,7 +8,7 @@ inputs:
 runs:
   using: composite
   steps:
-    - uses: actions/download-artifact@eaceaf801fd36c7dee90939fad912460b18a1ffe # v4.1.2
+    - uses: actions/download-artifact@c850b930e6ba138125429b7e5c93fc707a7f8427 # v4.1.4
       with:
         name: emqx-docker
         path: /tmp
@@ -24,14 +24,14 @@ runs:
         repository: emqx/emqx-fvt
         ref: broker-autotest-v5
         path: scripts
-    - uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93 # v4.0.0
+    - uses: actions/setup-java@9704b39bf258b59bc04b50fa2dd55e9ed76b47a8 # v4.1.0
       with:
         java-version: '8.0.282' # The JDK version to make available on the path.
         java-package: jdk # (jre, jdk, or jdk+fx) - defaults to jdk
         architecture: x64 # (x64 or x86) - defaults to x64
         # https://github.com/actions/setup-java/blob/main/docs/switching-to-v2.md
         distribution: 'zulu'
-    - uses: actions/download-artifact@eaceaf801fd36c7dee90939fad912460b18a1ffe # v4.1.2
+    - uses: actions/download-artifact@c850b930e6ba138125429b7e5c93fc707a7f8427 # v4.1.4
       with:
         name: apache-jmeter.tgz
     - name: install jmeter