'task build' now uses a compliant semver notation

Author: cmaglie

Taskfile.yml

@@ -362,7 +362,7 @@ vars:
     sh: echo "{{now | date "20060102"}}"
   TAG:
     sh: echo "$(git tag --points-at=HEAD 2> /dev/null | head -n1 | sed 's/^v//')"
-  VERSION: "{{if .NIGHTLY}}nightly-{{.TIMESTAMP_SHORT}}{{else if .TAG}}{{.TAG}}{{else}}{{.PACKAGE_NAME_PREFIX}}git-snapshot{{end}}"
+  VERSION: "{{if .NIGHTLY}}nightly-{{.TIMESTAMP_SHORT}}{{else if .TAG}}{{.TAG}}{{else}}{{.PACKAGE_NAME_PREFIX}}1.0.0-snapshot{{end}}"
   CONFIGURATION_PACKAGE: "github.com/arduino/arduino-cli/version"
   LDFLAGS: >-
     -ldflags