Bump (c) year to 2026

Use ASCII quotes in copyright notice

4.2.2 release notes updates

(cherry picked from commit 7c5f9d9)

Merge pull request rabbitmq#15114 from rabbitmq/mergify/bp/v4.1.x/pr-…

…15112

amqp_client, rabbitmq_auth_mechanism_ssl: fix Dialyzer on Erlang/OTP 28.3 (backport rabbitmq#15108) (backport rabbitmq#15112)

Merge pull request rabbitmq#14959 from rabbitmq/mergify/bp/v4.2.x/pr-…

…14953

Upgrade RabbitMQ Prometheus sample docker images  (backport rabbitmq#14953)

4.1.6 release notes

(cherry picked from commit df7c475)

Merge pull request rabbitmq#14828 from rabbitmq/mergify/bp/v4.2.x/pr-…

…14826

rabbit_db: Small style fixes (backport rabbitmq#14826)

Merge pull request rabbitmq#14821 from rabbitmq/dependabot/maven/deps…

…/rabbitmq_auth_backend_http/examples/rabbitmq_auth_backend_spring_boot/v4.1.x/prod-deps-2a767a09f7

[skip ci] Bump the prod-deps group across 2 directories with 2 updates

Merge pull request rabbitmq#14710 from rabbitmq/mergify/bp/v4.2.x/pr-…

…14614

Ensures pending counter in rabbit_shovel_status is always an integer (backport rabbitmq#14614)

4.2.0 release notes updates