kokoro: Update bazel to 7.0.2 for Linux builds (#5609)

diff --git a/README.md b/README.md
index 042b83d..e916a2c 100644
--- a/README.md
+++ b/README.md
@@ -426,7 +426,7 @@
 - [Python 3](http://www.python.org/): for utility scripts and running the test
 suite.
 - [Bazel](https://bazel.build/) (optional): if building the source with Bazel,
-you need to install Bazel Version 5.0.0 on your machine. Other versions may
+you need to install Bazel Version 7.0.2 on your machine. Other versions may
 also work, but are not verified.
 - [Emscripten SDK](https://emscripten.org) (optional): if building the
   WebAssembly module.
diff --git a/kokoro/scripts/linux/build-docker.sh b/kokoro/scripts/linux/build-docker.sh
index a0dc96a..e47037d 100755
--- a/kokoro/scripts/linux/build-docker.sh
+++ b/kokoro/scripts/linux/build-docker.sh
@@ -191,7 +191,7 @@
 
   echo $(date): ndk-build completed.
 elif [ $TOOL = "bazel" ]; then
-  using bazel-5.0.0
+  using bazel-7.0.2
 
   echo $(date): Build everything...
   bazel build --cxxopt=-std=c++17 :all