build(deps): bump the actions-prepare-jmeter group across 1 directory with 2 updates

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


Updates `actions/checkout` from 4.1.2 to 4.1.7
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](9bb56186c3...692973e3d9)

Updates `actions/download-artifact` from 4.1.4 to 4.1.8
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](c850b930e6...fa0a91b85d)

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

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

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

@@ -3,7 +3,7 @@ name: 'Prepare jmeter'
 runs:
   using: composite
   steps:
-    - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
+    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       with:
         repository: emqx/emqx-fvt
         ref: broker-autotest-v5
@@ -15,7 +15,7 @@ runs:
         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@c850b930e6ba138125429b7e5c93fc707a7f8427 # v4.1.4
+    - uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
       with:
         name: apache-jmeter.tgz
     - name: install jmeter