[chore]: enable gofumpt formatter

Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>

Author: mmorel-35

.golangci.yaml

@@ -206,6 +206,7 @@ formatters:
   enable:
     - gci
     - gofmt
+    - gofumpt
   settings:
     gci:
       sections:
@@ -214,5 +215,7 @@ formatters:
         - prefix(github.com/open-telemetry/opentelemetry-operator)
     gofmt:
       simplify: true
+    gofumpt:
+      extra-rules: true
   exclusions:
     generated: lax