build.ps1: Update reference to CCryptoBoringSSL

The CCryptoBoringSSL library changed from C to C++, which means that the
static archive on Windows changed names, from `CCryptoBoringSSL.lib` to
`libCCryptoBoringSSL.lib`. The SourceKit-LSP SwiftPM test invocation
explicitly passed `CCryptoBoringSSL.lib` to the SwiftPM invocation,
resulting in the wrong search path. Pointing it at the correct location
now.

(cherry picked from commit 2ff24aa)

Author: etcwilde

utils/build.ps1

@@ -2986,7 +2986,7 @@ function Test-SourceKitLSP {
     # swift-crypto
     "-Xswiftc", "-I$(Get-ProjectBinaryCache $BuildPlatform Crypto)\swift",
     "-Xlinker", "-L$(Get-ProjectBinaryCache $BuildPlatform Crypto)\lib",
-    "-Xlinker", "$(Get-ProjectBinaryCache $BuildPlatform Crypto)\lib\CCryptoBoringSSL.lib",
+    "-Xlinker", "$(Get-ProjectBinaryCache $BuildPlatform Crypto)\lib\libCCryptoBoringSSL.lib",
     # swift-asn1
     "-Xswiftc", "-I$(Get-ProjectBinaryCache $BuildPlatform ASN1)\swift",
     "-Xlinker", "-L$(Get-ProjectBinaryCache $BuildPlatform ASN1)\lib",