Bump minimal required Perl version to 5.36

Change-Id: Idcf6a5e6ea43929af9e2f7f855c9ea6e2075f714
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 6084aca..7334fa7 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -11,7 +11,7 @@
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        perl: [ '5.32', '5.30', '5.20' ]
+        perl: [ '5.38', '5.36' ]
     name: Perl ${{ matrix.perl }}
     steps:
       - uses: actions/checkout@v3