chore(deps): update dependency protobuf to v7 (#9114)

Author: renovate-bot

.kokoro/docs/docker/requirements.txt

@@ -105,17 +105,15 @@ proto-plus==1.26.1 \
     # via
     #   -r requirements.in
     #   google-api-core
-protobuf==6.33.6 \
-    --hash=sha256:0cd27b587afca21b7cfa59a74dcbd48a50f0a6400cfb59391340ad729d91d326 \
-    --hash=sha256:77179e006c476e69bf8e8ce866640091ec42e1beb80b213c3900006ecfba6901 \
-    --hash=sha256:7d29d9b65f8afef196f8334e80d6bc1d5d4adedb449971fefd3723824e6e77d3 \
-    --hash=sha256:9720e6961b251bde64edfdab7d500725a2af5280f3f4c87e57c0208376aa8c3a \
-    --hash=sha256:a6768d25248312c297558af96a9f9c929e8c4cee0659cb07e780731095f38135 \
-    --hash=sha256:bd56799fb262994b2c2faa1799693c95cc2e22c62f56fb43af311cae45d26f0e \
-    --hash=sha256:c96c37eec15086b79762ed265d59ab204dabc53056e3443e702d2681f4b39ce3 \
-    --hash=sha256:e2afbae9b8e1825e3529f88d514754e094278bb95eadc0e199751cdd9a2e82a2 \
-    --hash=sha256:e9db7e292e0ab79dd108d7f1a94fe31601ce1ee3f7b79e0692043423020b0593 \
-    --hash=sha256:f443a394af5ed23672bc6c486be138628fbe5c651ccbc536873d7da23d1868cf
+protobuf==7.34.1 \
+    --hash=sha256:34b84ce27680df7cca9f231043ada0daa55d0c44a2ddfaa58ec1d0d89d8bf60a \
+    --hash=sha256:403b093a6e28a960372b44e5eb081775c9b056e816a8029c61231743d63f881a \
+    --hash=sha256:5185e0e948d07abe94bb76ec9b8416b604cfe5da6f871d67aad30cbf24c3110b \
+    --hash=sha256:8ff40ce8cd688f7265326b38d5a1bed9bfdf5e6723d49961432f83e21d5713e4 \
+    --hash=sha256:9ce42245e704cc5027be797c1db1eb93184d44d1cdd71811fb2d9b25ad541280 \
+    --hash=sha256:bb3812cd53aefea2b028ef42bd780f5b96407247f20c6ef7c679807e9d188f11 \
+    --hash=sha256:d8b2cc79c4d8f62b293ad9b11ec3aebce9af481fa73e64556969f7345ebf9fc7 \
+    --hash=sha256:e97b55646e6ce5cbb0954a8c28cd39a5869b59090dfaa7df4598a7fba869468c
     # via
     #   gcp-docuploader
     #   google-api-core