Bug fixes:

• [middleware] Reuse compression writers (#11168 by michelheusschen)
• [middleware] Use correct default weight in Accept-Encoding (#11084 by michelheusschen)
• [plugins] Close wasm middleware to prevent memory leak (#11151 by ttys3)

Misc:

• Merge branch v2.11 into v3.1 (#11179 by kevinpollet)
• Merge branch v2.11 into v3.1 (#11174 by mmatur)