chore: update bearssl_pkey_decoder repo/versionv

jwt.nimble

@@ -7,4 +7,4 @@ license       = "MIT"
 # Deps
 requires "nim >= 0.19.0"
 requires "bearssl"
-requires "https://github.com/vacp2p/bearssl_pkey_decoder"
+requires "https://github.com/vacp2p/bearssl_pkey_decoder#21dd3710df9345ed2ad8bf8f882761e07863b8e0"

jwt/crypto.nim

@@ -47,11 +47,7 @@ proc pemDecoderLoop(
 
 proc decodeFromPem(skCtx: var SkeyDecoderContext, pem: string) =
   skeyDecoderInit(skCtx)
-  pemDecoderLoop(
-    pem,
-    cast[proc(ctx: pointer, pbytes: pointer, nbytes: uint) {.bearSslFunc.}](skeyDecoderPush),
-    addr skCtx,
-  )
+  pemDecoderLoop(pem, skeyDecoderPushShim, addr skCtx)
   if skeyDecoderLastError(skCtx) != 0:
     invalidPemKey()