fix: Upgrading grpc_health_probe to 0.4.48 to patch CVE-2025-68121 (#4745)

Signed-off-by: Aaron Levy <aaronmaxlevy@gmail.com>

Author: aaronmaxlevy

build/images/manager/Dockerfile

@@ -30,7 +30,7 @@ RUN make build-manager-server && make install-manager
 
 FROM ${BASE_IMAGE} AS health
 
-ENV GRPC_HEALTH_PROBE_VERSION=v0.4.24
+ENV GRPC_HEALTH_PROBE_VERSION=v0.4.48
 
 RUN if [ "$(uname -m)" = "ppc64le" ]; then \
     wget -qO/bin/grpc_health_probe https://github.com/grpc-ecosystem/grpc-health-probe/releases/download/${GRPC_HEALTH_PROBE_VERSION}/grpc_health_probe-linux-ppc64le; \

build/images/scheduler/Dockerfile

@@ -16,7 +16,7 @@ RUN make build-scheduler && make install-scheduler
 
 FROM ${BASE_IMAGE} AS health
 
-ENV GRPC_HEALTH_PROBE_VERSION=v0.4.24
+ENV GRPC_HEALTH_PROBE_VERSION=v0.4.48
 
 RUN if [ "$(uname -m)" = "ppc64le" ]; then \
     wget -qO/bin/grpc_health_probe https://github.com/grpc-ecosystem/grpc-health-probe/releases/download/${GRPC_HEALTH_PROBE_VERSION}/grpc_health_probe-linux-ppc64le; \