Bump curlimages/curl from 8.3.0 to 8.8.0 in /tests/suite/manifests/longevity (#2178)

Bump curlimages/curl in /tests/suite/manifests/longevity

Bumps curlimages/curl from 8.3.0 to 8.8.0.

---
updated-dependencies:
- dependency-name: curlimages/curl
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

tests/suite/manifests/longevity/cronjob.yaml

@@ -40,7 +40,7 @@ spec:
           serviceAccountName: rollout-mgr
           containers:
           - name: coffee-rollout-mgr
-            image: curlimages/curl:8.3.0
+            image: curlimages/curl:8.8.0
             imagePullPolicy: IfNotPresent
             command:
             - /bin/sh
@@ -69,7 +69,7 @@ spec:
           serviceAccountName: rollout-mgr
           containers:
           - name: coffee-rollout-mgr
-            image: curlimages/curl:8.3.0
+            image: curlimages/curl:8.8.0
             imagePullPolicy: IfNotPresent
             command:
             - /bin/sh