Update free-podcasts-screencasts-si.md (#6272)

* Added new web development course

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* Added new language to "Podcast - Screencast"

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Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* Update casts/free-podcasts-screencasts-si.md
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

casts/free-podcasts-screencasts-si.md

 ### Index
 
+* [DevOps](#devops)
 * [FOSS](#foss)
 
 
+### DevOps
+
+* [DevOps With Zack](https://anchor.fm/arshad-zackeriya) - Arshad Zackeriya
+
+
 ### FOSS
 
 * [SLIIT FOSSCAST](https://anchor.fm/sliit-foss-community) - SLIIT FOSS Community