Update speakers.yaml

Polkadot track

spec/23/speakers.yaml

@@ -183,7 +183,7 @@
     Founder of [Polkadotters](https://twitter.com/polkadotters1)
   web:
     url: https://www.facebook.com/petr.mensik.374
-  tracks: [ alty, defi ]
+  tracks: [ alty, defi, polkadot ]
   country: cz
   desc: |
     Zakladatel Polkadot, Dfinity a Solana komunit v ČR a na Slovensku. Nejblíže je mi ovšem [Polkadot](https://polkadot.network/), proto jsme založili značku [Polkadotters](https://polkadotters.medium.com/) pod kterou pravidelně píšeme pro mezinárodní publikum a zároveň provozujeme validátory na Polkadotu, Kusamě a téměr všech ostatních parachainech.
@@ -826,7 +826,7 @@
     Technical educator, PhD in statistics
   desc: |
     Filippo has a PhD in statistics & drone engineering. He previously taught statistical computing and data analysis. Filippo strongly believes in the Web3 vision of having a privacy-focused, secure, and decentralized internet where power is given back to the users. The complexity of Web3 technology can be intimidating, and it is still a major blocking element behind mainstream adoption. Filippo is excited to educate professionals and the general public about Web3 and blockchain technology.
-  tracks: [ zaklady, alty ]
+  tracks: [ zaklady, alty, polkadot ]
   country: ch
   pretalxId: SM8E9Q
 
@@ -1086,7 +1086,7 @@
     Co-founder & CTO of [KodaDot](https://kodadot.xyz/), Experimental brewer [SubWork](https://subwork.xyz/).
   caption: |
     Crafting the world, one pixel at a time
-  tracks: [ zaklady, nft ]
+  tracks: [ zaklady, nft, polkadot ]
   country: sk
   desc: |
     Co-founder of @KodaDot
@@ -1115,7 +1115,7 @@
     Spoluzakladatel [Polkadotters](https://twitter.com/polkadotterss).
   caption: |
     Kryptoměnový nadšenec, Polkadot ambassador
-  tracks: [ defi, alty, spolecnost ]
+  tracks: [ defi, alty, spolecnost, polkadot ]
   country: cz
   pretalxId: W7VZNR
 
@@ -1259,7 +1259,7 @@
     [KodaDot](https://kodadot.xyz/) CEO
   caption: |
     Progresivní web3 kouzelník, Solarpunk futurist
-  tracks: [ dao ]
+  tracks: [ dao, polkadot ]
   country: sk
   desc: |
     🔆 🌘 Solar ⚔️  Lunar punk ⏳💾  Accumulating History 🦠🧠 Senescent cells are bad 🥽🖼️  @KodaDot @SubWorkBled
@@ -1320,7 +1320,7 @@
     Founder of [CCTF](https://cryptoctf.org/) and [Polkadot](https://polkadot.network/) Head Ambassador.
   caption: |
     Web3 security auditor and consultant
-  tracks: [ nft ]
+  tracks: [ nft, polkadot ]
   web:
     url: https://sixthedave.me
   country: hu