fix: install curl in final image layer

[plyr4]

moving apk add curl to the final image layer.

i understand grouping them would be ideal, but that requires a COPY from one alpine layer to another alpine layer.
which is fine, but you would need to also COPY the following shared libraries to make it actually work:

# ldd /usr/bin/curl
	/lib/ld-musl-aarch64.so.1 
	libcurl.so.4 => /usr/lib/libcurl.so.4 
	libz.so.1 => /lib/libz.so.1 
	libc.musl-aarch64.so.1 => /lib/ld-musl-aarch64.so.1 
	libcares.so.2 => /usr/lib/libcares.so.2 
	libnghttp2.so.14 => /usr/lib/libnghttp2.so.14 
	libidn2.so.0 => /usr/lib/libidn2.so.0 
	libpsl.so.5 => /usr/lib/libpsl.so.5 
	libssl.so.3 => /lib/libssl.so.3 
	libcrypto.so.3 => /lib/libcrypto.so.3 
	libzstd.so.1 => /usr/lib/libzstd.so.1 
	libbrotlidec.so.1 => /usr/lib/libbrotlidec.so.1 
	libunistring.so.5 => /usr/lib/libunistring.so.5 
	libbrotlicommon.so.1 => /usr/lib/libbrotlicommon.so.1 

to me, just doing an apk add curl in the final image is more sustainable and readable, considering its not even a scratch image, its alpine.

any thoughts? im open to other suggestion, im also open to just copying those shared libs, but it feels like maintenance hell

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.26%. Comparing base (000a0dc) to head (c77adac).
Report is 1 commits behind head on main.

Additional details and impacted files

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  Files          12       12           
  Lines         761      761           
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  Hits          314      314           
  Misses        434      434           
  Partials       13       13