Bump google-cloud-storage from 2.15.0 to 2.18.0

Bumps [google-cloud-storage](https://github.com/googleapis/python-storage) from 2.15.0 to 2.18.0.
- [Release notes](https://github.com/googleapis/python-storage/releases)
- [Changelog](https://github.com/googleapis/python-storage/blob/main/CHANGELOG.md)
- [Commits](googleapis/python-storage@v2.15.0...v2.18.0)

---
updated-dependencies:
- dependency-name: google-cloud-storage
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -130,9 +130,9 @@ google-cloud-pubsub==2.21.1 \
     --hash=sha256:31fcf07444b7f813a616c4b650e1fbf1dc998a088fe0059a76164855ac17f05c \
     --hash=sha256:55a3602ec45bc09626604d712032288a8ee3566145cb83523cff908938f69a4b
     # via -r requirements.in
-google-cloud-storage==2.15.0 \
-    --hash=sha256:5d9237f88b648e1d724a0f20b5cde65996a37fe51d75d17660b1404097327dd2 \
-    --hash=sha256:7560a3c48a03d66c553dc55215d35883c680fe0ab44c23aa4832800ccc855c74
+google-cloud-storage==2.18.0 \
+    --hash=sha256:0aa3f7c57f3632f81b455d91558d2b27ada96eee2de3aaa17f689db1470d9578 \
+    --hash=sha256:e8e1a9577952143c3fca8163005ecfadd2d70ec080fa158a8b305000e2c22fbb
     # via -r requirements.in
 google-crc32c==1.5.0 \
     --hash=sha256:024894d9d3cfbc5943f8f230e23950cd4906b2fe004c72e29b209420a1e6b05a \