Use master branch for cosmic-edit, cosmic-files, and cosmic-term

recipes/tools/cosmic-edit/recipe.toml

 [source]
 git = "https://github.com/pop-os/cosmic-edit.git"
 branch = "master"
-rev = "df5d10936c5a1cc16e231b92221eae7c73ed9da4"
+
 [build]
 template = "custom"
 script = """

recipes/tools/cosmic-files/recipe.toml

 [source]
 git = "https://github.com/pop-os/cosmic-files.git"
 branch = "master"
-rev = "190029aa27d08a26877e73db2dda789de3e6595f"
+
 [build]
 template = "custom"
 script = """

recipes/tools/cosmic-term/recipe.toml

 [source]
 git = "https://github.com/pop-os/cosmic-term.git"
 branch = "master"
-rev = "be808b56cf24d03fc99cf44b0885078a81a16523"
+
 [build]
 template = "custom"
 script = """