Add attestations by sipsorcery for 28.1rc1 non-codesigned

28.1rc1/sipsorcery/noncodesigned.SHA256SUMS

@@ -0,0 +1,21 @@
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+b4c89ef13541424d695b84900a3923ddee5f305f3b749621456c1913e295c0e8  bitcoin-28.1rc1-riscv64-linux-gnu-debug.tar.gz
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+c84d88c57a7948803615290bc728fbc7b3a52c85b5c7e75760014d5f60991bd6  bitcoin-28.1rc1-x86_64-apple-darwin-unsigned.tar.gz
+8b9ec06ada1d28d7b3a508759920b59f5f24ce67ca6395afc78efc1066274fc7  bitcoin-28.1rc1-x86_64-apple-darwin-unsigned.zip
+47336922da06c115a7372265bc813606b82fabede8ccfc76b0ac110c3bd9f0fe  bitcoin-28.1rc1-x86_64-apple-darwin.tar.gz
+45d9ac8738c5151f2dfefc4b49ae424083b0ceb7b67beaa18d4bb6d365ce7c79  bitcoin-28.1rc1-x86_64-linux-gnu-debug.tar.gz
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+5fa82820cf0e9a2a25d7dd0cd8923125e6e6f62be450213953cb45969fe6636a  bitcoin-28.1rc1-win64-debug.zip
+9b8f4863335be95e74b2b74048922d8a13468a3c770d4aceb9e0be7799999cf1  bitcoin-28.1rc1-win64-setup-unsigned.exe
+088e0749b3893fec8623faf78b22177e24bce617d7663f7d4947bc2956e1f79b  bitcoin-28.1rc1-win64-unsigned.tar.gz
+ec83382fd1a98e96a9d5c524c4ae4d49c8d29d5ded8e1dd6038d0427916a9b82  bitcoin-28.1rc1-win64.zip

28.1rc1/sipsorcery/noncodesigned.SHA256SUMS.asc

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