[ImgBot] Optimize images

*Total -- 477.50kb -> 277.73kb (41.84%)

/Website/docs/img/firewall-rule.png -- 84.42kb -> 45.24kb (46.41%)
/Website/blog/2026-04-30-introducing-firewall/firewall-rule.png -- 84.42kb -> 45.24kb (46.41%)
/Website/blog/2026-04-30-introducing-firewall/firewall.png -- 71.64kb -> 40.42kb (43.58%)
/Website/docs/img/firewall.png -- 71.64kb -> 40.42kb (43.58%)
/Website/docs/img/neighbor-table.png -- 86.00kb -> 55.23kb (35.78%)
/Website/docs/img/neighbor-table-entry.png -- 79.38kb -> 51.19kb (35.51%)

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