Fix static type checker error

Error message:
    error: Argument of type "str | None" cannot be assigned to parameter
    "full_name_or_id" of type "int | str" in function "get_repo"
    (reportGeneralTypeIssues)

Author: zachborboa

scripts/make_release.py

@@ -11,7 +11,7 @@
 from github import Github
 
 # The owner and repository name. For example, octocat/Hello-World.
-GITHUB_REPOSITORY = os.getenv("GITHUB_REPOSITORY")
+GITHUB_REPOSITORY = os.getenv("GITHUB_REPOSITORY", "")
 
 GITHUB_TOKEN = os.getenv("GITHUB_TOKEN")
 GITHUB_REF_NAME = os.getenv("GITHUB_REF_NAME")