deps: update dependency google-cloud-storage to v2.13.0 (#2216)

Author: renovate-bot

.kokoro/requirements.txt

@@ -141,9 +141,9 @@ google-cloud-core==2.3.3 \
     --hash=sha256:37b80273c8d7eee1ae816b3a20ae43585ea50506cb0e60f3cf5be5f87f1373cb \
     --hash=sha256:fbd11cad3e98a7e5b0343dc07cb1039a5ffd7a5bb96e1f1e27cee4bda4a90863
     # via google-cloud-storage
-google-cloud-storage==2.12.0 \
-    --hash=sha256:57c0bcda2f5e11f008a155d8636d8381d5abab46b58e0cae0e46dd5e595e6b46 \
-    --hash=sha256:bc52563439d42981b6e21b071a76da2791672776eda3ba99d13a8061ebbd6e5e
+google-cloud-storage==2.13.0 \
+    --hash=sha256:ab0bf2e1780a1b74cf17fccb13788070b729f50c252f0c94ada2aae0ca95437d \
+    --hash=sha256:f62dc4c7b6cd4360d072e3deb28035fbdad491ac3d9b0b1815a12daea10f37c7
     # via gcp-docuploader
 google-crc32c==1.5.0 \
     --hash=sha256:024894d9d3cfbc5943f8f230e23950cd4906b2fe004c72e29b209420a1e6b05a \