chore(deps): update fluxcd/flux2 action to v2.8.4

| datasource  | package      | from   | to     |
| ----------- | ------------ | ------ | ------ |
| github-tags | fluxcd/flux2 | v2.8.3 | v2.8.4 |


Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>

Author: renovate-sh-app[bot]

.github/workflows/test-delay.yaml

@@ -73,7 +73,7 @@ jobs:
           path: helm-chart-toolbox
 
       - name: Install Flux CLI
-        uses: fluxcd/flux2/action@871be9b40d53627786d3a3835a3ddba1e3234bd2  # v2.8.3
+        uses: fluxcd/flux2/action@3cf3cb546fc549fa7e8a9ec6d3254accc027b46e  # v2.8.4
 
       - name: Install Kind CLI
         uses: helm/kind-action@ef37e7f390d99f746eb8b610417061a60e82a6cc  # v1.14.0

.github/workflows/test-helm-test.yaml

@@ -66,7 +66,7 @@ jobs:
           path: helm-chart-toolbox
 
       - name: Install Flux CLI
-        uses: fluxcd/flux2/action@871be9b40d53627786d3a3835a3ddba1e3234bd2  # v2.8.3
+        uses: fluxcd/flux2/action@3cf3cb546fc549fa7e8a9ec6d3254accc027b46e  # v2.8.4
 
       - name: Install Kind CLI
         uses: helm/kind-action@ef37e7f390d99f746eb8b610417061a60e82a6cc  # v1.14.0

.github/workflows/test-query-test.yaml

@@ -73,7 +73,7 @@ jobs:
           path: helm-chart-toolbox
 
       - name: Install Flux CLI
-        uses: fluxcd/flux2/action@871be9b40d53627786d3a3835a3ddba1e3234bd2  # v2.8.3
+        uses: fluxcd/flux2/action@3cf3cb546fc549fa7e8a9ec6d3254accc027b46e  # v2.8.4
 
       - name: Install Kind CLI
         uses: helm/kind-action@ef37e7f390d99f746eb8b610417061a60e82a6cc  # v1.14.0