switch krte:v.*-1.34 to valid v20250808-38ff9ff2bd-1.34

v20250717-57d1ca3de9-1.34 does not exist, #34675

Author: BenTheElder

config/jobs/kubernetes/sig-release/release-branch-jobs/1.34.yaml

@@ -159,7 +159,7 @@ periodics:
         value: Conformance && !Slow && !Disruptive && !Flaky
       - name: PARALLEL
         value: "true"
-      image: gcr.io/k8s-staging-test-infra/krte:v20250717-57d1ca3de9-1.34
+      image: gcr.io/k8s-staging-test-infra/krte:v20250808-38ff9ff2bd-1.34
       name: ""
       resources:
         limits:
@@ -1066,7 +1066,7 @@ periodics:
         value: 'Feature: isEmpty && !Slow && !Disruptive && !Flaky'
       - name: PARALLEL
         value: "true"
-      image: gcr.io/k8s-staging-test-infra/krte:v20250717-57d1ca3de9-1.34
+      image: gcr.io/k8s-staging-test-infra/krte:v20250808-38ff9ff2bd-1.34
       name: ""
       resources:
         limits:
@@ -1113,7 +1113,7 @@ periodics:
         value: 'Feature: isEmpty && !Slow && !Disruptive && !Flaky'
       - name: PARALLEL
         value: "true"
-      image: gcr.io/k8s-staging-test-infra/krte:v20250717-57d1ca3de9-1.34
+      image: gcr.io/k8s-staging-test-infra/krte:v20250808-38ff9ff2bd-1.34
       name: ""
       resources:
         limits:
@@ -1290,7 +1290,7 @@ presubmits:
           value: 'Feature: isEmpty && !Slow && !Disruptive && !Flaky'
         - name: PARALLEL
           value: "true"
-        image: gcr.io/k8s-staging-test-infra/krte:v20250717-57d1ca3de9-1.34
+        image: gcr.io/k8s-staging-test-infra/krte:v20250808-38ff9ff2bd-1.34
         name: ""
         resources:
           limits:
@@ -1370,7 +1370,7 @@ presubmits:
           value: "true"
         - name: GO_VERSION
           value: devel
-        image: gcr.io/k8s-staging-test-infra/krte:v20250717-57d1ca3de9-1.34
+        image: gcr.io/k8s-staging-test-infra/krte:v20250808-38ff9ff2bd-1.34
         name: ""
         resources:
           limits:
@@ -3435,7 +3435,7 @@ presubmits:
           value: ipv6
         - name: PARALLEL
           value: "true"
-        image: gcr.io/k8s-staging-test-infra/krte:v20250717-57d1ca3de9-1.34
+        image: gcr.io/k8s-staging-test-infra/krte:v20250808-38ff9ff2bd-1.34
         name: ""
         resources:
           limits:
@@ -3602,7 +3602,7 @@ presubmits:
           value: 'Feature: isEmpty && !Slow && !Disruptive && !Flaky'
         - name: PARALLEL
           value: "true"
-        image: gcr.io/k8s-staging-test-infra/krte:v20250717-57d1ca3de9-1.34
+        image: gcr.io/k8s-staging-test-infra/krte:v20250808-38ff9ff2bd-1.34
         name: ""
         resources:
           limits:
@@ -3644,7 +3644,7 @@ presubmits:
           value: "true"
         - name: IP_FAMILY
           value: ipv6
-        image: gcr.io/k8s-staging-test-infra/krte:v20250717-57d1ca3de9-1.34
+        image: gcr.io/k8s-staging-test-infra/krte:v20250808-38ff9ff2bd-1.34
         name: ""
         resources:
           limits:
@@ -3681,7 +3681,7 @@ presubmits:
           value: "true"
         - name: PARALLEL
           value: "true"
-        image: gcr.io/k8s-staging-test-infra/krte:v20250717-57d1ca3de9-1.34
+        image: gcr.io/k8s-staging-test-infra/krte:v20250808-38ff9ff2bd-1.34
         name: ""
         resources:
           limits: