Bumped bazelisk to 1.25.0 for example_bazel

ros2_example_bazel_installed/setup/install_prereqs.sh

@@ -58,12 +58,10 @@ function dpkg_install_from_curl() {
 
 apt install g++ unzip zlib1g-dev
 
-# TODO(eric.cousineau) Once there's a bazelisk 1.20 that incorporates pr563, we
-# should switch to using that here.
 dpkg_install_from_curl \
-  bazelisk 1.19.0 \
-  https://drake-mirror.csail.mit.edu/github/bazelbuild/bazelisk/pr563/bazelisk_1.19.0-9-g58a850f_amd64.deb \
-  c2bfd15d6c3422ae540cda9facc0ac395005e2701c09dbb15d40447b53e831d4
+  bazelisk 1.25.0 \
+  https://github.com/bazelbuild/bazelisk/releases/download/v1.25.0/bazelisk-amd64.deb \
+  f16dc348190990eb2e8950e773bc91dcdc7632517e5b63bdc4dd58f90062920c
 
 # If the user did not explicitly specify their installation prefix, install
 # ROS 2 Humble.