chore(deps): update dependency nh3 to v0.2.19 (#527)

.kokoro/requirements.txt

@@ -446,23 +446,30 @@ more-itertools==10.5.0 \
     # via
     #   jaraco-classes
     #   jaraco-functools
-nh3==0.2.18 \
-    --hash=sha256:0411beb0589eacb6734f28d5497ca2ed379eafab8ad8c84b31bb5c34072b7164 \
-    --hash=sha256:14c5a72e9fe82aea5fe3072116ad4661af5cf8e8ff8fc5ad3450f123e4925e86 \
-    --hash=sha256:19aaba96e0f795bd0a6c56291495ff59364f4300d4a39b29a0abc9cb3774a84b \
-    --hash=sha256:34c03fa78e328c691f982b7c03d4423bdfd7da69cd707fe572f544cf74ac23ad \
-    --hash=sha256:36c95d4b70530b320b365659bb5034341316e6a9b30f0b25fa9c9eff4c27a204 \
-    --hash=sha256:3a157ab149e591bb638a55c8c6bcb8cdb559c8b12c13a8affaba6cedfe51713a \
-    --hash=sha256:42c64511469005058cd17cc1537578eac40ae9f7200bedcfd1fc1a05f4f8c200 \
-    --hash=sha256:5f36b271dae35c465ef5e9090e1fdaba4a60a56f0bb0ba03e0932a66f28b9189 \
-    --hash=sha256:6955369e4d9f48f41e3f238a9e60f9410645db7e07435e62c6a9ea6135a4907f \
-    --hash=sha256:7b7c2a3c9eb1a827d42539aa64091640bd275b81e097cd1d8d82ef91ffa2e811 \
-    --hash=sha256:8ce0f819d2f1933953fca255db2471ad58184a60508f03e6285e5114b6254844 \
-    --hash=sha256:94a166927e53972a9698af9542ace4e38b9de50c34352b962f4d9a7d4c927af4 \
-    --hash=sha256:a7f1b5b2c15866f2db413a3649a8fe4fd7b428ae58be2c0f6bca5eefd53ca2be \
-    --hash=sha256:c8b3a1cebcba9b3669ed1a84cc65bf005728d2f0bc1ed2a6594a992e817f3a50 \
-    --hash=sha256:de3ceed6e661954871d6cd78b410213bdcb136f79aafe22aa7182e028b8c7307 \
-    --hash=sha256:f0eca9ca8628dbb4e916ae2491d72957fdd35f7a5d326b7032a345f111ac07fe
+nh3==0.2.19 \
+    --hash=sha256:00810cd5275f5c3f44b9eb0e521d1a841ee2f8023622de39ffc7d88bd533d8e0 \
+    --hash=sha256:0b6820fc64f2ff7ef3e7253a093c946a87865c877b3889149a6d21d322ed8dbd \
+    --hash=sha256:11270b16c1b012677e3e2dd166c1aa273388776bf99a3e3677179db5097ee16a \
+    --hash=sha256:2b926f179eb4bce72b651bfdf76f8aa05d167b2b72bc2f3657fd319f40232adc \
+    --hash=sha256:2eb021804e9df1761abeb844bb86648d77aa118a663c82f50ea04110d87ed707 \
+    --hash=sha256:3805161c4e12088bd74752ba69630e915bc30fe666034f47217a2f16b16efc37 \
+    --hash=sha256:5d4f5e2189861b352b73acb803b5f4bb409c2f36275d22717e27d4e0c217ae55 \
+    --hash=sha256:75c7cafb840f24430b009f7368945cb5ca88b2b54bb384ebfba495f16bc9c121 \
+    --hash=sha256:7e98621856b0a911c21faa5eef8f8ea3e691526c2433f9afc2be713cb6fbdb48 \
+    --hash=sha256:833b3b5f1783ce95834a13030300cea00cbdfd64ea29260d01af9c4821da0aa9 \
+    --hash=sha256:a7b928862daddb29805a1010a0282f77f4b8b238a37b5f76bc6c0d16d930fd22 \
+    --hash=sha256:ac536a4b5c073fdadd8f5f4889adabe1cbdae55305366fb870723c96ca7f49c3 \
+    --hash=sha256:b8eb7affc590e542fa7981ef508cd1644f62176bcd10d4429890fc629b47f0bc \
+    --hash=sha256:c2e3f0d18cc101132fe10ab7ef5c4f41411297e639e23b64b5e888ccaad63f41 \
+    --hash=sha256:d0adf00e2b2026fa10a42537b60d161e516f206781c7515e4e97e09f72a8c5d0 \
+    --hash=sha256:d53a4577b6123ca1d7e8483fad3e13cb7eda28913d516bd0a648c1a473aa21a9 \
+    --hash=sha256:d8325d51e47cb5b11f649d55e626d56c76041ba508cd59e0cb1cf687cc7612f1 \
+    --hash=sha256:df8eac98fec80bd6f5fd0ae27a65de14f1e1a65a76d8e2237eb695f9cd1121d9 \
+    --hash=sha256:e3dedd7858a21312f7675841529941035a2ac91057db13402c8fe907aa19205a \
+    --hash=sha256:ec9c8bf86e397cb88c560361f60fdce478b5edb8b93f04ead419b72fbe937ea6 \
+    --hash=sha256:ed06ed78f6b69d57463b46a04f68f270605301e69d80756a8adf7519002de57d \
+    --hash=sha256:fc483dd8d20f8f8c010783a25a84db3bebeadced92d24d34b40d687f8043ac69 \
+    --hash=sha256:fdb20740d24ab9f2a1341458a00a11205294e97e905de060eeab1ceca020c09c
     # via
     #   -r requirements.in
     #   readme-renderer