feat: Move BT chunk processing into retry (#806)

Bigtable stream reads are not reliable, and may fail at any time.
Move the chunk processing into the retry section to reduce the number
of read errors that can happen.

Version and cargo update included because of an audit update.

Closes: [SYNC-4508](https://mozilla-hub.atlassian.net/browse/SYNC-4508)

[SYNC-4508]:
https://mozilla-hub.atlassian.net/browse/SYNC-4508?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

---------

Co-authored-by: Philip Jenvey <pjenvey@underboss.org>

.cargo/audit.toml

@@ -1,4 +1,4 @@
 [advisories]
 ignore = [
-    "RUSTSEC-2021-0124", # Bound by tokio restrictions, cargo, reqwest, hyper...    
+    "RUSTSEC-2021-0124", # Bound by tokio restrictions, cargo, reqwest, hyper...
 ]

.circleci/config.yml

@@ -53,7 +53,7 @@ commands:
             apt install build-essential curl libstdc++6 libstdc++-12-dev libssl-dev pkg-config -y
             apt install cmake -y
             # RUST_VER
-            curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain 1.81 -y
+            curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain 1.83 -y
             export PATH=$PATH:$HOME/.cargo/bin
             echo 'export PATH=$PATH:$HOME/.cargo/bin' >> $BASH_ENV
             rustc --version
@@ -113,7 +113,7 @@ jobs:
   audit:
     docker:
       # NOTE: update version for all # RUST_VER
-      - image: rust:1.81
+      - image: rust:1.83
         auth:
           username: $DOCKER_USER
           password: $DOCKER_PASS