Revert ".github/workflows: Stop ignoring RUBY_TESTOPTS"

This reverts commit 946695c.

Apparently this doesn't work for test-bundled-gems

Author: k0kubun

.github/workflows/zjit-macos.yml

@@ -118,7 +118,7 @@ jobs:
           make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
             RUN_OPTS="$RUN_OPTS" \
             SPECOPTS="$SPECOPTS" \
-            TESTOPTS="$RUBY_TESTOPTS $TESTOPTS"
+            TESTOPTS="$TESTOPTS"
         timeout-minutes: 60
         env:
           RUBY_TESTOPTS: '-q --tty=no'

.github/workflows/zjit-ubuntu.yml

@@ -164,7 +164,7 @@ jobs:
           set -x
           make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
             RUN_OPTS="$RUN_OPTS" MSPECOPT=--debug SPECOPTS="$SPECOPTS" \
-            TESTOPTS="$RUBY_TESTOPTS $TESTOPTS" \
+            TESTOPTS="$TESTOPTS" \
             ZJIT_BINDGEN_DIFF_OPTS="$ZJIT_BINDGEN_DIFF_OPTS"
         timeout-minutes: 90
         env: