4.1.2 backports

[barchetta]

Backport following PRs for 4.1.2:

• Fix DbClient PostgreSQL tests #9240 (4.1.2: Fix DbClient PostgreSQL tests #9293)
• Smart async writer in webserver #9191 (4.1.2: Smart async writer in webserver #9292)
• New implementation for SSE in webserver #9224 (4.1.2: New implementation for SSE in webserver #9297)
• Grouping Executors related methods into a single class #9271 (4.1.2: Grouping Executors related methods into a single class #9298)
• 4.x: Upgrades protobuf to latest version 3.25.5 #9279 (4.1.2: Upgrades protobuf to latest version 3.25.5 #9299)
• 4.x: Adds support to iterate over URIs when connecting to a gRPC service #9285 (4.1.2: Adds support to iterate over URIs when connecting to a gRPC service #9300)
• 4.x: JSON Formatter for JUL #9260 (4.1.2: JSON Formatter for JUL  #9301)
• 4.x: Upgrade Jersey to 3.1.8 #9296 (4.1.2: Upgrade Jersy to 3.1.8  #9303)
• Policy validator configurable per endpoint in config #9248 (4.1.2: Policy validator configurable per endpoint in config (#9248) #9308)
• Add emphasis on including an OTel exporter and configuring which to use #9311 (4.1.2: Add emphasis on including an OTel exporter and configuring  #9312)
• Allows the webserver's write buffer size to be set to 0 #9313 (4.1.2: Allows the webserver's write buffer size to be set to 0  #9314)
• 4.x: Document work-around for maven archetype issue #9316 (4.1.2: Document work-around for maven archetype issue (#9316) #9324)
• Uptake build-tools 4.0.12 #9317 (4.1.2: Uptake build-tools 4.0.12  #9323)
• LRA testing feature #8469 (4.1.2: LRA testing feature #9320)
• 4.x - Fix DataReader.findNewLine with lone EOL character #9325 (4.1.2: Fix DataReader.findNewLine with lone EOL character (#9325) #9327)

Already released in 4.1.1

• 4.x: UncheckedIOException no longer a special case #9206 (even though I marked it 4.2.0 [Tomas])