Update Prow jobs to Go 1.24.8

On-behalf-of: SAP <[email protected]>
Signed-off-by: Marvin Beckers <[email protected]>

Author: embik

.prow.yaml

@@ -21,7 +21,7 @@ presubmits:
       preset-goproxy: "true"
     spec:
       containers:
-        - image: ghcr.io/kcp-dev/infra/build:1.23.10-1
+        - image: ghcr.io/kcp-dev/infra/build:1.24.8-3
           command:
             - make
             - verify
@@ -38,7 +38,7 @@ presubmits:
       preset-goproxy: "true"
     spec:
       containers:
-        - image: ghcr.io/kcp-dev/infra/build:1.23.10-1
+        - image: ghcr.io/kcp-dev/infra/build:1.24.8-3
           command:
             - make
             - lint
@@ -55,13 +55,13 @@ presubmits:
       preset-goproxy: "true"
     spec:
       containers:
-        - image: ghcr.io/kcp-dev/infra/build:1.23.10-1
+        - image: ghcr.io/kcp-dev/infra/build:1.24.8-3
           command:
             - make
             - test
           env:
             - name: USE_GOTESTSUM
-              value: '1'
+              value: "1"
           resources:
             requests:
               memory: 4Gi