🦉 Updates from OwlBot post-processor

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

Author: gcf-owl-bot[bot]

.kokoro/requirements.txt

@@ -140,9 +140,9 @@ gcp-releasetool==1.8.7 \
     --hash=sha256:3d2a67c9db39322194afb3b427e9cb0476ce8f2a04033695f0aeb63979fc2b37 \
     --hash=sha256:5e4d28f66e90780d77f3ecf1e9155852b0c3b13cbccb08ab07e66b2357c8da8d
     # via -r requirements.in
-google-api-core==2.10.1 \
-    --hash=sha256:92d17123cfe399b5ef7e026c63babf978d8475e1ac877919eb7933e25dea2273 \
-    --hash=sha256:e16c15a11789bc5a3457afb2818a3540a03f341e6e710d7f9bbf6cde2ef4a7c8
+google-api-core==2.8.2 \
+    --hash=sha256:06f7244c640322b508b125903bb5701bebabce8832f85aba9335ec00b3d02edc \
+    --hash=sha256:93c6a91ccac79079ac6bbf8b74ee75db970cc899278b97d53bc012f35908cf50
     # via
     #   -r requirements.in
     #   google-cloud-core