[ImgBot] Optimize images

*Total -- 6,703.83kb -> 5,051.74kb (24.64%)

/skynet/port-80.png -- 24.29kb -> 7.87kb (67.59%)
/daily-bugle/yum-privesc.png -- 40.75kb -> 14.79kb (63.69%)
/game-zone/sqli-simple-login.png -- 4.03kb -> 1.64kb (59.2%)
/toolsrus/protected_page_moved.png -- 26.26kb -> 11.68kb (55.52%)
/steel-mountain/unauth-page.png -- 24.69kb -> 11.46kb (53.58%)
/game-zone/portal-login-dash.png -- 16.50kb -> 8.57kb (48.07%)
/daily-bugle/login-page.png -- 40.00kb -> 21.03kb (47.43%)
/overpass-2/very_cute_page.png -- 118.33kb -> 63.39kb (46.43%)
/alfred/port-8080-login.png -- 37.66kb -> 20.30kb (46.11%)
/hackpark/login-page.png -- 36.01kb -> 19.58kb (45.65%)
/lazy-admin/content_folder.png -- 78.80kb -> 45.07kb (42.8%)
/windows-10-privesc-tib3rius/adminpaint-process.png -- 17.07kb -> 9.90kb (42.02%)
/game-zone/localhost-10000.png -- 26.45kb -> 15.44kb (41.63%)
/steel-mountain/port-8080-page.png -- 45.92kb -> 27.00kb (41.21%)
/ignite-darkstar7471/home_page.png -- 181.16kb -> 109.90kb (39.33%)
/game-zone/home-page.png -- 321.00kb -> 198.82kb (38.06%)
/toolsrus/war_file_upload.png -- 36.16kb -> 22.82kb (36.88%)
/brute-it/rsapage.png -- 28.98kb -> 18.56kb (35.95%)
/skynet/mailserver.png -- 35.16kb -> 23.40kb (33.44%)
/skynet/cuppa-login.png -- 258.07kb -> 172.13kb (33.3%)
/lazy-admin/login_portal.png -- 46.75kb -> 31.67kb (32.27%)
/alfred/port-80-page.png -- 144.71kb -> 100.67kb (30.43%)
/startup-elbee/port_80.png -- 43.91kb -> 31.95kb (27.23%)
/steel-mountain/hfs-page.png -- 105.89kb -> 77.70kb (26.62%)
/skynet/hidden-directory.png -- 202.80kb -> 151.29kb (25.4%)
/blue/blue-room-top.png -- 1,042.13kb -> 783.46kb (24.82%)
/overpass-2/upload_vuln_endpoint.png -- 821.20kb -> 621.13kb (24.36%)
/lazy-admin/crackstation_pswd.png -- 46.69kb -> 35.67kb (23.61%)
/alfred/initial-access-2.png -- 91.62kb -> 71.07kb (22.43%)
/overpass-2/revshell.png -- 281.53kb -> 218.65kb (22.33%)
/startup-elbee/ftp_upload_test.png -- 24.54kb -> 19.13kb (22.04%)
/overpass-2/tcpstream_30.png -- 294.96kb -> 230.50kb (21.85%)
/alfred/initial-access-1.png -- 136.75kb -> 107.39kb (21.47%)
/wgel-ctf/wget_privesc_sudo.png -- 25.51kb -> 20.07kb (21.33%)
/blue/eblue-search.png -- 196.76kb -> 158.12kb (19.64%)
/boiler-ctf/find-exploit.png -- 89.53kb -> 72.53kb (18.98%)
/relevant/revshell_load.png -- 11.38kb -> 9.23kb (18.88%)
/anthem-chevalier/authorsflag.png -- 237.85kb -> 193.46kb (18.66%)
/reversing-elf/crackme6.png -- 31.16kb -> 25.66kb (17.63%)
/reversing-elf/crackme8.png -- 6.66kb -> 5.55kb (16.67%)
/game-zone/webmin-dash.png -- 92.03kb -> 76.69kb (16.66%)
/boiler-ctf/testpage.png -- 99.02kb -> 84.18kb (14.98%)
/startup-elbee/revshellsession.png -- 132.87kb -> 113.25kb (14.77%)
/alfred/burp-intruder.png -- 93.44kb -> 80.60kb (13.74%)
/anthem-chevalier/search_inspect_flag.png -- 194.24kb -> 167.59kb (13.72%)
/reversing-elf/crackme7.png -- 5.61kb -> 4.86kb (13.45%)
/anthem-chevalier/header_inspect_flag.png -- 223.38kb -> 195.78kb (12.36%)
/alfred/dashboard.png -- 77.84kb -> 68.39kb (12.14%)
/skynet/brutelogin.png -- 52.33kb -> 46.34kb (11.45%)
/anthem-chevalier/userflag.png -- 149.78kb -> 133.08kb (11.15%)
/alfred/sniper-attack.png -- 41.49kb -> 37.18kb (10.39%)
/windows-10-privesc-tib3rius/revshell-upload.png -- 47.92kb -> 44.25kb (7.64%)
/windows-10-privesc-tib3rius/the-beginning.png -- 37.23kb -> 35.24kb (5.33%)
/overpass/admin_success.png -- 177.07kb -> 176.02kb (0.59%)

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