build: reduce binary size by adding -s -w to ldflags (#716)

Add `-s` (omit symbol table and debug info) and `-w` (omit DWARF debug info) to linker flags to minimize the size of the generated binaries.

Signed-off-by: Rui Chen <rui@chenrui.dev>
Co-authored-by: Evan Gibler <20933572+egibs@users.noreply.github.com>

.goreleaser.yaml

@@ -16,7 +16,7 @@ builds:
       - -trimpath
     mod_timestamp: '{{ .CommitTimestamp }}'
     ldflags:
-      - -X main.BuildVersion={{.Version}}
+      - -s -w -X main.BuildVersion={{.Version}}
 
 checksum:
   name_template: 'checksums.txt'