build: configure branch java7 as a release branch (#707)

enable releases

Author: Neenu1995

.github/release-please.yml

@@ -6,3 +6,7 @@ branches:
     handleGHRelease: true
     releaseType: java-lts
     branch: 0.25.2-sp
+  - bumpMinorPreMajor: true
+    handleGHRelease: true
+    releaseType: java-yoshi
+    branch: java7

.github/sync-repo-settings.yaml

@@ -31,6 +31,20 @@ branchProtectionRules:
     requiredApprovingReviewCount: 1
     requiresCodeOwnerReviews: true
     requiresStrictStatusChecks: true
+  - pattern: java7
+    isAdminEnforced: true
+    requiredStatusCheckContexts:
+      - dependencies (8)
+      - dependencies (11)
+      - linkage-monitor
+      - lint
+      - clirr
+      - units (8)
+      - units (11)
+      - cla/google
+    requiredApprovingReviewCount: 1
+    requiresCodeOwnerReviews: true
+    requiresStrictStatusChecks: true
 permissionRules:
   - team: Googlers
     permission: pull