Bump dep on rules_pkg to 1.2.0 (#43842)

- stop depending on a git commit hash
- use the release archive, which is not in the BCR yet.  That may be a few more weeks until I can automate the BCR update process (which is incredibly low priority for me)

Co-authored-by: tony.aiuto <tony.aiuto@datadoghq.com>

Author: aiuto

MODULE.bazel

@@ -31,11 +31,11 @@ bazel_dep(name = "bazel_lib", version = "3.0.0")
 bazel_dep(name = "rules_pkg", version = "1.1.0")
 bazel_dep(name = "rules_shell", version = "0.6.1")
 
-# Temporary until a future rules_pkg release
-git_override(
+# Temporary until rules_pkg 1.2.0 is in BCR
+archive_override(
     module_name = "rules_pkg",
-    commit = "2fab459c805e3f171284856aebb0ceaca2c0ff08",
-    remote = "https://github.com/bazelbuild/rules_pkg",
+    sha256 = "b5c9184a23bb0bcff241981fd9d9e2a97638a1374c9953bb1808836ce711f990",
+    urls = ["https://github.com/bazelbuild/rules_pkg/releases/download/1.2.0/rules_pkg-1.2.0.tar.gz"],
 )
 
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