Update Makefile and gradle.properties for improved builds

Add `SHELL := /bin/bash` in Makefile for consistent shell usage and implement a `tag-sync` target for tag synchronization. Increment `pluginsVersion` in gradle.properties to 1.0.16 for updated plugin compatibility.

Author: eliasmeireles

Makefile

@@ -1,3 +1,5 @@
+SHELL := /bin/bash
+
 target ?= 8.5
 tag ?= 1.0.0-SNAPSHOT
 
@@ -20,3 +22,6 @@ publish:
 
 publish-version:
 	./installer $(tag)
+
+tag-sync:
+	comm -23 <(git tag | sort) <(git ls-remote --tags origin | sed 's/.*\///' | sed 's/\^{}//' | sort) | xargs -n 1 git tag -d

gradle.properties

@@ -1,5 +1,5 @@
 # Plugin
-pluginsVersion=1.0.15
+pluginsVersion=1.0.16
 releaseBranch=main
 defaultBuiltBy=@Software Place
 pluginsGroup=com.github.softwareplace.springboot