Upgrade minimum perl version

Change-Id: Ifc45e6585db24339794fec221f04fb4eb0b291e3
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 7f2fea0..77aca61 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -12,10 +12,10 @@
     strategy:
       matrix:
         perl-version:
-          - '5.20'
-          - '5.22'
-          - '5.30'
           - '5.32'
+          - '5.34'
+          - '5.36'
+          - '5.38'
     name: Perl ${{ matrix.perl-version }} on Linux
     container:
       image: perl:${{ matrix.perl-version }}