build: bump project versions and update minimum Zig

Update main project and Python binding versions to 0.5.1.
Set minimum Zig version to 0.16.0-dev.164+bc7955306.

Author: arrufat

bindings/python/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "zignal-processing"
-version = "0.5.0"
+version = "0.5.1"
 description = "Zero-dependency image processing library"
 readme = "README.md"
 authors = [{name = "zignal contributors"}]

build.zig.zon

@@ -1,8 +1,8 @@
 .{
     .name = .zignal,
-    .version = "0.6.0-dev",
+    .version = "0.5.1",
     .fingerprint = 0x5303c43db377b63a,
-    .minimum_zig_version = "0.15.1",
+    .minimum_zig_version = "0.16.0-dev.164+bc7955306",
     .dependencies = .{},
     .paths = .{
         "build.zig",

examples/build.zig.zon

@@ -2,7 +2,7 @@
     .name = .zignal_examples,
     .version = "0.0.0",
     .fingerprint = 0xcf70e6a9b7002db6,
-    .minimum_zig_version = "0.15.1",
+    .minimum_zig_version = "0.16.0-dev.164+bc7955306",
     .dependencies = .{
         .zignal = .{
             .path = "../",