Resolves FoundationDB#1640: Dependency bump for 3.2 release

This updates the proto3 version to 3.20.1 and updates a few other dependencies as well. It leaves the guava version at 30.1-jre instead of updating it to 31.1-jre because that causes spotbugs violations regarding nullability problems. I think those errors are because of a possible change in the way Guava handles nullability annotations, but it seems like something we should fix later.

docs/ReleaseNotes.md

@@ -10,6 +10,8 @@ As the [versioning guide](Versioning.md) details, it cannot always be determined
 
 The FoundationDB Java binding dependency has been updated to 7.1 with this release. This means that clients also need to update their main FDB C client to a 7.1 version. Adopters that still wish to connect to an FDB cluster running a 6.3 or 7.0 server version can do so by packaging additional FDB C clients at the appropriate version(s) using the [FDB multi-version client feature](https://apple.github.io/foundationdb/api-general.html#multi-version-client).
 
+This release also updates downstream dependency versions. Most notably, the proto3 artifacts now require Protobuf version 3.20.1.
+
 <!--
 // begin next release
 ### NEXT_RELEASE
@@ -30,7 +32,7 @@ The FoundationDB Java binding dependency has been updated to 7.1 with this relea
 * **Feature** Feature 4 [(Issue #NNN)](https://github.com/FoundationDB/fdb-record-layer/issues/NNN)
 * **Feature** Feature 5 [(Issue #NNN)](https://github.com/FoundationDB/fdb-record-layer/issues/NNN)
 * **Breaking change** The FDB dependency has been updated to require version 7.1 [(Issue #1636)](https://github.com/FoundationDB/fdb-record-layer/issues/1636)
-* **Breaking change** Change 2 [(Issue #NNN)](https://github.com/FoundationDB/fdb-record-layer/issues/NNN)
+* **Breaking change** Additional downstream dependency versions have been upgraded, including Protobuf [(Issue #1640)](https://github.com/FoundationDB/fdb-record-layer/issues/1640)
 * **Breaking change** Change 3 [(Issue #NNN)](https://github.com/FoundationDB/fdb-record-layer/issues/NNN)
 * **Breaking change** Change 4 [(Issue #NNN)](https://github.com/FoundationDB/fdb-record-layer/issues/NNN)
 * **Breaking change** Change 5 [(Issue #NNN)](https://github.com/FoundationDB/fdb-record-layer/issues/NNN)

gradle.properties

@@ -31,10 +31,10 @@ org.gradle.jvmargs=-Xmx4096m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryErro
 
 fdbVersion=7.1.3
 jsr305Version=3.0.2
-slf4jVersion=1.7.30
+slf4jVersion=1.7.36
 commonsLang3Version=3.12.0
 commonsMath3Version=3.6.1
-log4jVersion=2.17.1
+log4jVersion=2.17.2
 guavaVersion=30.1-jre
 hamcrestVersion=2.2
 # AutoService kept on 1.0-rc6 to avoid annotation being retained in CLASS. See: https://github.com/FoundationDB/fdb-record-layer/issues/1281
@@ -46,7 +46,7 @@ junitVersion=5.7.1
 jacocoVersion=0.8.5
 
 protobuf2Version=2.6.1
-protobuf3Version=3.15.6
+protobuf3Version=3.20.1
 
 mavenLocalEnabled=false
 org.gradle.daemon=true