chore: regenerate common configuration from templates

Author: yoshi-automation

.kokoro/continuous/propose_release.cfg

@@ -21,7 +21,7 @@ env_vars: {
 
 env_vars: {
   key: "TRAMPOLINE_BUILD_FILE"
-  value: "github/google-http-java-client/.kokoro/release/bump_snapshot.sh"
+  value: "github/google-http-java-client/.kokoro/continuous/propose_release.sh"
 }
 
 # tokens used by release-please to keep an up-to-date release PR.

.kokoro/continuous/propose_release.sh

@@ -1,5 +1,5 @@
 {
-  "updateTime": "2019-08-20T08:09:10.578787Z",
+  "updateTime": "2019-08-27T08:10:09.160937Z",
   "sources": [
     {
       "template": {