chore(deps): update dependency google-cloud-storage to v3

Author: renovate-bot

.kokoro/requirements.txt

@@ -272,9 +272,9 @@ google-cloud-core==2.4.2 \
     --hash=sha256:7459c3e83de7cb8b9ecfec9babc910efb4314030c56dd798eaad12c426f7d180 \
     --hash=sha256:a4fcb0e2fcfd4bfe963837fad6d10943754fd79c1a50097d68540b6eb3d67f35
     # via google-cloud-storage
-google-cloud-storage==2.19.0 \
-    --hash=sha256:aeb971b5c29cf8ab98445082cbfe7b161a1f48ed275822f59ed3f1524ea54fba \
-    --hash=sha256:cd05e9e7191ba6cb68934d8eb76054d9be4562aa89dbc4236feee4d7d51342b2
+google-cloud-storage==3.1.0 \
+    --hash=sha256:944273179897c7c8a07ee15f2e6466a02da0c7c4b9ecceac2a26017cb2972049 \
+    --hash=sha256:eaf36966b68660a9633f03b067e4a10ce09f1377cae3ff9f2c699f69a81c66c6
     # via gcp-docuploader
 google-crc32c==1.6.0 \
     --hash=sha256:05e2d8c9a2f853ff116db9706b4a27350587f341eda835f46db3c0a8c8ce2f24 \