Merge #14799: docs: convert link from http to https in doc/release-process.md

4ab638b http -> https (Dimitris Apostolou)

Pull request description:

Tree-SHA512: dc56aa3ddae478879c71af152a4383d892c6077104b137853af1a051ee6508686772516f5608ac0dcaecd2d48e84d9dab5f92ce4e544a3c2bec9fab3f6af0eb5

Author: jonasschnelli

doc/release-process.md

@@ -87,7 +87,7 @@ Ensure gitian-builder is up-to-date:
     pushd ./gitian-builder
     mkdir -p inputs
     wget -P inputs https://bitcoincore.org/cfields/osslsigncode-Backports-to-1.7.1.patch
-    wget -P inputs http://downloads.sourceforge.net/project/osslsigncode/osslsigncode/osslsigncode-1.7.1.tar.gz
+    wget -P inputs https://downloads.sourceforge.net/project/osslsigncode/osslsigncode/osslsigncode-1.7.1.tar.gz
     popd
 
 Create the macOS SDK tarball, see the [macOS readme](README_osx.md) for details, and copy it into the inputs directory.