Update 'modified_packages.yml'

The strings are sorted in alphabetical order

modified_packages.yml

@@ -1,5 +1,6 @@
 ---
 modified_packages:
+  - WALinuxAgent
   - abrt
   - anaconda
   - anaconda-user-help
@@ -32,24 +33,23 @@ modified_packages:
   - opa-ff
   - opa-fm
   - openscap
-  - osslsigncode
   - osbuild
   - osbuild-composer
+  - osslsigncode
   - pcs
   - perl-AnyEvent
+  - python-nss
   - python2
   - python3
-  - python-nss
   - redhat-rpm-config
   - rpm-ostree
   - s390utils
   - scap-security-guide
   - shim
-  - shim-unsigned-x64
   - shim-unsigned-aarch64
+  - shim-unsigned-x64
   - sos
   - subscription-manager
   - thunderbird
   - virt-manager
-  - WALinuxAgent
 ...