use scorecard as binary name for all release builds

Previously, the binary name included the build platform which
complicated running Scorecard after extracting the tarball. As all
binaries now share the same name, we need a unique folder for each
binary, so also removes `no_unique_dist_dir`.

ossf#4517

Signed-off-by: Spencer Schrock <[email protected]>

Author: spencerschrock

.goreleaser.yml

@@ -11,8 +11,7 @@ gomod:
   proxy: true
 builds:
 - id: linux
-  binary: scorecard-linux-{{ .Arch }}
-  no_unique_dist_dir: true
+  binary: scorecard
   flags:
    # trimpath is for reproducible builds
    # remove all file system paths from the resulting executable.
@@ -36,8 +35,7 @@ builds:
     - -s {{.Env.VERSION_LDFLAGS}} 
 
 - id: darwin
-  binary: scorecard-darwin-{{ .Arch }}
-  no_unique_dist_dir: true
+  binary: scorecard
   flags:
    # trimpath is for reproducible builds
    # remove all file system paths from the resulting executable.
@@ -61,8 +59,7 @@ builds:
     - -s {{.Env.VERSION_LDFLAGS}} 
 
 - id: windows
-  binary: scorecard-windows-{{ .Arch }}
-  no_unique_dist_dir: true
+  binary: scorecard
   flags:
    # trimpath is for reproducible builds
    # remove all file system paths from the resulting executable.