chore(deps): update dependency protobuf to v7 (#9021)

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==6.33.5 \
-    --hash=sha256:3093804752167bcab3998bec9f1048baae6e29505adaf1afd14a37bddede533c \
-    --hash=sha256:69915a973dd0f60f31a08b8318b73eab2bd6a392c79184b3612226b0a3f8ec02 \
-    --hash=sha256:6ddcac2a081f8b7b9642c09406bc6a4290128fce5f471cddd165960bb9119e5c \
-    --hash=sha256:8afa18e1d6d20af15b417e728e9f60f3aa108ee76f23c3b2c07a2c3b546d3afd \
-    --hash=sha256:8f04fa32763dcdb4973d537d6b54e615cc61108c7cb38fe59310c3192d29510a \
-    --hash=sha256:9b71e0281f36f179d00cbcb119cb19dec4d14a81393e5ea220f64b286173e190 \
-    --hash=sha256:a3157e62729aafb8df6da2c03aa5c0937c7266c626ce11a278b6eb7963c4e37c \
-    --hash=sha256:a5cb85982d95d906df1e2210e58f8e4f1e3cdc088e52c921a041f9c9a0386de5 \
-    --hash=sha256:cbf16ba3350fb7b889fca858fb215967792dc125b35c7976ca4818bee3521cf0 \
-    --hash=sha256:d71b040839446bac0f4d162e758bea99c8251161dae9d0983a3b88dee345153b
+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