chore: add version file paths to release-please confg (#1450)

* chore: track release date for each version

* update the release date to the previous release

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* chore: add versions file paths to release-pleace config

* fix format

* add date tag to vendored version.py

* put release-please.yml to the owl bot exclusion list

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: sycai

.github/release-please.yml

@@ -1,2 +1,5 @@
 releaseType: python
 handleGHRelease: true
+extraFiles:
+  - bigframes/version.py
+  - third_party/bigframes_vendored/version.py

owlbot.py

@@ -50,6 +50,7 @@
         "README.rst",
         "CONTRIBUTING.rst",
         ".github/release-trigger.yml",
+        ".github/release-please.yml",
         # BigQuery DataFrames manages its own Kokoro cluster for presubmit & continuous tests.
         ".kokoro/build.sh",
         ".kokoro/continuous/common.cfg",

third_party/bigframes_vendored/version.py

@@ -13,3 +13,7 @@
 # limitations under the License.
 
 __version__ = "1.38.0"
+
+# {x-release-please-start-date}
+__release_date__ = "2025-02-24"
+# {x-release-please-end}