modules/renumber: rename a module-global variable

... to avoid shadowing which broke lint:other in CI.
And add NEWS entry.
26 jobs for policy-reroute in 45 seconds (queued for 5 seconds)
latest
Status Job ID Name Coverage
  Build
canceled #331394
amd64 linux docker
archive

00:00:09

canceled #331395
amd64 linux docker
build

00:00:09

canceled #331396
amd64 linux docker
build-asan

00:00:09

canceled #331397
docker
kres-gen

00:00:08

 
  Test
canceled #331398
docker delayed
build:darwin

canceled #331399
amd64 linux docker
deckard

canceled #331400
docker delayed
doc

canceled #331401
dind
docker

passed #334458
docker delayed
lint:other

00:00:35

canceled #331403
amd64 linux docker delayed
lint:pedantic

canceled #331404
amd64 linux docker
lint:scan-build

canceled #331405
amd64 linux docker
lint:tidy

canceled #331406
amd64 linux docker
respdiff:basic

canceled #331407
amd64 linux docker delayed
test:valgrind

canceled #331402
docker delayed
lint:other

 
  Extended
canceled #331409
respdiff
fwd-tls6-kresd.udp6

canceled #331410
respdiff
fwd-udp6-kresd.udp6

canceled #331414
respdiff
fwd-udp6-unbound.tcp6

canceled #331415
respdiff
fwd-udp6-unbound.tls6

canceled #331413
respdiff
fwd-udp6-unbound.udp6

canceled #331412
respdiff
iter.tls6

canceled #331411
respdiff
iter.udp6

canceled #331408
amd64 linux docker
pytests

canceled #331416
respdiff
resperf:fwd-tls6.udp-asan

canceled #331417
respdiff
resperf:fwd-udp6.udp-asan

canceled #331418
respdiff
resperf:iter.udp-asan