Add @minhquang4334 as a contributor (#4707)

Signed-off-by: t-kikuc <[email protected]>
Co-authored-by: Yoshiki Fujikane <[email protected]>

README.md

@@ -157,6 +157,7 @@ You can find a list of publicly recognized users of the PipeCD in the [ADOPTERS.
 <a href="https://github.com/mugioka"><img src="https://avatars.githubusercontent.com/u/62197019?v=4" title="mugioka" width="80" height="80"></a>
 <a href="https://github.com/naonao2323"><img src="https://avatars.githubusercontent.com/u/74669884?v=4" title="naonao2323" width="80" height="80"></a>
 <a href="https://github.com/tokku5552"><img src="https://avatars.githubusercontent.com/u/69064290?v=4" title="tokku5552" width="80" height="80"></a>
+<a href="https://github.com/minhquang4334"><img src="https://avatars.githubusercontent.com/u/22545967?v=4" title="minhquang4334" width="80" height="80"></a>
 
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