collectd-5.4.0.tar.gz can't be downloaded anymore

[andsel]

Build scan:
https://app.travis-ci.com/github/logstash-plugins/logstash-codec-collectd/builds

Repro line:

export ELASTIC_STACK_VERSION=8.x
.ci/docker-setup.sh

or

export LOGSTASH_PATH=/path/to/logstash/ && export LOGSTASH_SOURCE=1
bundle install
bundle exec rake vendor

Reproduces locally?:
yes

Applicable branches:
main

Failure history:

Failure excerpt:

andrea:logstash-codec-collectd (main) % bundle exec rake vendor
Downloading https://collectd.org/files/collectd-5.4.0.tar.gz
rake aborted!
SHA1 does not match (expected 'a90fe6cc53b76b7bdd56dc57950d90787cb9c96e' but got '3adb1f02d5b6054de0046e367c1d687b6cdf7aff')
/Users/andrea/.rvm/gems/jruby-9.4.2.0/gems/logstash-devutils-2.5.0-java/lib/logstash/devutils/rake/vendor.rake:20:in `fetch'
/Users/andrea/.rvm/gems/jruby-9.4.2.0/gems/logstash-devutils-2.5.0-java/lib/logstash/devutils/rake/vendor.rake:31:in `block in file_fetch'
org/jruby/ext/monitor/Monitor.java:82:in `synchronize'
/Users/andrea/.rvm/gems/jruby-9.4.2.0/gems/logstash-devutils-2.5.0-java/lib/logstash/devutils/rake/vendor.rake:36:in `file_fetch'
/Users/andrea/.rvm/gems/jruby-9.4.2.0/gems/logstash-devutils-2.5.0-java/lib/logstash/devutils/rake/vendor.rake:160:in `block in <main>'
/Users/andrea/.rvm/gems/jruby-9.4.2.0/gems/logstash-devutils-2.5.0-java/lib/logstash/devutils/rake/vendor.rake:159:in `block in <main>'
org/jruby/ext/monitor/Monitor.java:82:in `synchronize'
org/jruby/ext/monitor/Monitor.java:82:in `synchronize'
/Users/andrea/.rvm/gems/jruby-9.4.2.0/gems/rake-13.1.0/exe/rake:27:in `<main>'
/Users/andrea/.rvm/gems/jruby-9.4.2.0/bin/jruby_executable_hooks:22:in `<main>'
Tasks: TOP => vendor/collectd-5.4.0.tar.gz
(See full trace by running task with --trace)

From some date around 2023/12/21 the url used to download collectd is not anymore reachable: https://collectd.org/files/collectd-5.4.0.tar.gz