chore(deps): bump zipp from 3.18.1 to 3.19.1 in /.kokoro (#86)

Bumps [zipp](https://github.com/jaraco/zipp) from 3.18.1 to 3.19.1.
- [Release notes](https://github.com/jaraco/zipp/releases)
- [Changelog](https://github.com/jaraco/zipp/blob/main/NEWS.rst)
- [Commits](jaraco/zipp@v3.18.1...v3.19.1)

---
updated-dependencies:
- dependency-name: zipp
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.kokoro/requirements.txt

@@ -516,9 +516,9 @@ wheel==0.43.0 \
     --hash=sha256:465ef92c69fa5c5da2d1cf8ac40559a8c940886afcef87dcf14b9470862f1d85 \
     --hash=sha256:55c570405f142630c6b9f72fe09d9b67cf1477fcf543ae5b8dcb1f5b7377da81
     # via -r requirements.in
-zipp==3.18.1 \
-    --hash=sha256:206f5a15f2af3dbaee80769fb7dc6f249695e940acca08dfb2a4769fe61e538b \
-    --hash=sha256:2884ed22e7d8961de1c9a05142eb69a247f120291bc0206a00a7642f09b5b715
+zipp==3.19.1 \
+    --hash=sha256:2828e64edb5386ea6a52e7ba7cdb17bb30a73a858f5eb6eb93d8d36f5ea26091 \
+    --hash=sha256:35427f6d5594f4acf82d25541438348c26736fa9b3afa2754bcd63cdb99d8e8f
     # via importlib-metadata
 
 # WARNING: The following packages were not pinned, but pip requires them to be