🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

.kokoro/requirements.txt

@@ -335,21 +335,33 @@ packaging==21.3 \
     # via
     #   -r requirements.in
     #   gcp-releasetool
-protobuf==4.21.6 \
-    --hash=sha256:07a0bb9cc6114f16a39c866dc28b6e3d96fa4ffb9cc1033057412547e6e75cb9 \
-    --hash=sha256:308173d3e5a3528787bb8c93abea81d5a950bdce62840d9760effc84127fb39c \
-    --hash=sha256:4143513c766db85b9d7c18dbf8339673c8a290131b2a0fe73855ab20770f72b0 \
-    --hash=sha256:49f88d56a9180dbb7f6199c920f5bb5c1dd0172f672983bb281298d57c2ac8eb \
-    --hash=sha256:6b1040a5661cd5f6e610cbca9cfaa2a17d60e2bb545309bc1b278bb05be44bdd \
-    --hash=sha256:77b355c8604fe285536155286b28b0c4cbc57cf81b08d8357bf34829ea982860 \
-    --hash=sha256:7a6cc8842257265bdfd6b74d088b829e44bcac3cca234c5fdd6052730017b9ea \
-    --hash=sha256:80e6540381080715fddac12690ee42d087d0d17395f8d0078dfd6f1181e7be4c \
-    --hash=sha256:8f9e60f7d44592c66e7b332b6a7b4b6e8d8b889393c79dbc3a91f815118f8eac \
-    --hash=sha256:9666da97129138585b26afcb63ad4887f602e169cafe754a8258541c553b8b5d \
-    --hash=sha256:aa29113ec901281f29d9d27b01193407a98aa9658b8a777b0325e6d97149f5ce \
-    --hash=sha256:b6cea204865595a92a7b240e4b65bcaaca3ad5d2ce25d9db3756eba06041138e \
-    --hash=sha256:ba596b9ffb85c909fcfe1b1a23136224ed678af3faf9912d3fa483d5f9813c4e \
-    --hash=sha256:c7c864148a237f058c739ae7a05a2b403c0dfa4ce7d1f3e5213f352ad52d57c6
+protobuf==3.19.5 \
+    --hash=sha256:1867f93b06a183f87696871bb8d1e99ee71dbb69d468ce1f0cc8bf3d30f982f3 \
+    --hash=sha256:3c4160b601220627f7e91154e572baf5e161a9c3f445a8242d536ee3d0b7b17c \
+    --hash=sha256:4ee2af7051d3b10c8a4fe6fd1a2c69f201fea36aeee7086cf202a692e1b99ee1 \
+    --hash=sha256:5266c36cc0af3bb3dbf44f199d225b33da66a9a5c3bdc2b14865ad10eddf0e37 \
+    --hash=sha256:5470f892961af464ae6eaf0f3099e2c1190ae8c7f36f174b89491281341f79ca \
+    --hash=sha256:66d14b5b90090353efe75c9fb1bf65ef7267383034688d255b500822e37d5c2f \
+    --hash=sha256:67efb5d20618020aa9596e17bfc37ca068c28ec0c1507d9507f73c93d46c9855 \
+    --hash=sha256:696e6cfab94cc15a14946f2bf72719dced087d437adbd994fff34f38986628bc \
+    --hash=sha256:6a02172b9650f819d01fb8e224fc69b0706458fc1ab4f1c669281243c71c1a5e \
+    --hash=sha256:6eca9ae238ba615d702387a2ddea635d535d769994a9968c09a4ca920c487ab9 \
+    --hash=sha256:950abd6c00e7b51f87ae8b18a0ce4d69fea217f62f171426e77de5061f6d9850 \
+    --hash=sha256:9e1d74032f56ff25f417cfe84c8147047732e5059137ca42efad20cbbd25f5e0 \
+    --hash=sha256:9e42b1cf2ecd8a1bd161239e693f22035ba99905ae6d7efeac8a0546c7ec1a27 \
+    --hash=sha256:9f957ef53e872d58a0afd3bf6d80d48535d28c99b40e75e6634cbc33ea42fd54 \
+    --hash=sha256:a89aa0c042e61e11ade320b802d6db4ee5391d8d973e46d3a48172c1597789f8 \
+    --hash=sha256:c0f80876a8ff0ae7064084ed094eb86497bd5a3812e6fc96a05318b92301674e \
+    --hash=sha256:c44e3282cff74ad18c7e8a0375f407f69ee50c2116364b44492a196293e08b21 \
+    --hash=sha256:d249519ba5ecf5dd6b18150c9b6bcde510b273714b696f3923ff8308fc11ae49 \
+    --hash=sha256:d3973a2d58aefc7d1230725c2447ce7f86a71cbc094b86a77c6ee1505ac7cdb1 \
+    --hash=sha256:dca2284378a5f2a86ffed35c6ac147d14c48b525eefcd1083e5a9ce28dfa8657 \
+    --hash=sha256:e63b0b3c42e51c94add62b010366cd4979cb6d5f06158bcae8faac4c294f91e1 \
+    --hash=sha256:f2b599a21c9a32e171ec29a2ac54e03297736c578698e11b099d031f79da114b \
+    --hash=sha256:f2bde37667b18c2b5280df83bc799204394a5d2d774e4deaf9de0eb741df6833 \
+    --hash=sha256:f4f909f4dde413dec435a44b0894956d55bb928ded7d6e3c726556ca4c796e84 \
+    --hash=sha256:f976234e20ab2785f54224bcdafa027674e23663b132fa3ca0caa291a6cfbde7 \
+    --hash=sha256:f9cebda093c2f6bfed88f1c17cdade09d4d96096421b344026feee236532d4de
     # via
     #   -r requirements.in
     #   gcp-docuploader