Bump version to 4.7.0

CHANGES

@@ -1,3 +1,10 @@
+In 4.7.0
+
+* Flow control `{socket_active, N}` option in streaming replication #271
+* `{socket_active, N}` option generalized to all `epgsql` modes #278
+* CI upgraded to support OTP-25, OTP-19 dropped, run some tests on PostgreSQL 14 #276
+* `format_status/1` OTP-25 `gen_server` callback implemented #277
+
 In 4.6.1
 
 * Introduce `get_backend_pid` function #270

src/epgsql.app.src

@@ -1,6 +1,6 @@
 {application, epgsql,
  [{description, "PostgreSQL Client"},
-  {vsn, "4.6.1"},
+  {vsn, "4.7.0"},
   {modules, []},
   {registered, []},
   {applications, [kernel,