chore(deps): update dependency ubuntu to v26

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This PR contains the following updates:

Package	Type	Update	Change
ubuntu	github-runner	major	24.04 → 26.04

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Slowest examples

Top 10 slowest examples (1.13 seconds, 44.94% of total time)

Example	Description	Time in seconds
spec/unit/recipes/install_spec.rb:73	haproxy_install compile HAProxy on Amazon Linux (uses PCRE) is expected not to install package "pcre2-devel"	0.14935
spec/unit/recipes/cache_spec.rb:45	haproxy_cache create a cache, frontend and backend and verify config is created properly is expected to render file "/etc/haproxy/haproxy.cfg"	0.1472
spec/unit/recipes/defaults_spec.rb:26	haproxy_config_defaults create a cache, frontend and backend and verify config is created properly is expected to render file "/etc/haproxy/haproxy.cfg"	0.14541
spec/unit/recipes/install_spec.rb:31	haproxy_install compile HAProxy on Ubuntu is expected not to install package "pcre-devel"	0.12984
spec/unit/recipes/listen_spec.rb:105	haproxy_listen extra options http-request rule should be placed before use_backend rule is expected to render file "/etc/haproxy/haproxy.cfg"	0.09488
spec/unit/recipes/listen_spec.rb:61	haproxy_listen option parameter with array of options is expected to render file "/etc/haproxy/haproxy.cfg"	0.09477
spec/unit/recipes/fastcgi_spec.rb:63	haproxy_fastcgi create a fastcgi resource, frontend and backend and verify config is created properly is expected to render file "/etc/haproxy/haproxy.cfg"	0.09473
spec/unit/recipes/peer_spec.rb:45	haproxy_peer create a peers section, frontend and backend and verify config is created properly is expected to render file "/etc/haproxy/haproxy.cfg"	0.09393
spec/unit/recipes/mailer_spec.rb:48	haproxy_mailer create a mailer, frontend and backend and verify config is created properly is expected to render file "/etc/haproxy/haproxy.cfg"	0.09391
spec/unit/recipes/frontend_backend_spec.rb:34	haproxy_frontend create frontend and backend with http-request rule placed before use_backend is expected not to render file "/etc/haproxy/haproxy.cfg" with content /use_backend admin0 if path_beg /admin0.*http-request add-header Test Value/m	0.09352