ci: Add ORA_TZFILE workaround to remaining gvenzl/oracle-free workflows

rsim#291 added the ORA-01805 workaround to `ruby_head.yml`. The same root
cause -- `gvenzl/oracle-free:latest` shipping a newer timezone-data
version than the "latest" Instant Client embeds -- affects every other
workflow that combines that image with ruby-oci8:

- `truffleruby.yml`: failing on schedule since 2026-05-09 with
  `ORA-01805` from `ocidatetime.c:119 in oci8lib_truffleruby.so`
  (https://github.com/rsim/ruby-plsql/actions/runs/25710673905).
- `test.yml`: not yet run against the updated image (latest run was
  2026-05-08, image upgrade landed on 05-09); will fail on the MRI
  matrix slots on the next push/PR.
- `test_gemfiles.yml`: same situation as test.yml.

Apply the same dynamic copy-and-set-ORA_TZFILE step immediately after
`Create database user`. `jruby_head.yml` is excluded because it uses
the JDBC driver and is not affected (confirmed still green on schedule).

Author: yahonda

.github/workflows/test.yml

@@ -74,6 +74,17 @@ jobs:
     - name: Create database user
       run: |
         ./ci/setup_accounts.sh
+    - name: Force client TZ data to match server (ORA_TZFILE workaround)
+      run: |
+        ORACLE_CONTAINER=$(docker ps --filter "ancestor=gvenzl/oracle-free" -q)
+        SRC=$(docker exec "$ORACLE_CONTAINER" bash -c 'ls $ORACLE_HOME/oracore/zoneinfo/timezlrg_*.dat 2>/dev/null | head -1')
+        echo "Server TZ file: $SRC"
+        DST_DIR="$ORACLE_HOME/oracore/zoneinfo"
+        sudo mkdir -p "$DST_DIR"
+        docker cp "$ORACLE_CONTAINER":"$SRC" /tmp/_server_tzfile.dat
+        sudo mv /tmp/_server_tzfile.dat "$DST_DIR/$(basename "$SRC")"
+        ls -l "$DST_DIR"
+        echo "ORA_TZFILE=$DST_DIR/$(basename "$SRC")" >> $GITHUB_ENV
     - name: Bundle install
       run: |
         bundle install --jobs 4 --retry 3

.github/workflows/test_gemfiles.yml

@@ -88,6 +88,17 @@ jobs:
     - name: Create database user
       run: |
         ./ci/setup_accounts.sh
+    - name: Force client TZ data to match server (ORA_TZFILE workaround)
+      run: |
+        ORACLE_CONTAINER=$(docker ps --filter "ancestor=gvenzl/oracle-free" -q)
+        SRC=$(docker exec "$ORACLE_CONTAINER" bash -c 'ls $ORACLE_HOME/oracore/zoneinfo/timezlrg_*.dat 2>/dev/null | head -1')
+        echo "Server TZ file: $SRC"
+        DST_DIR="$ORACLE_HOME/oracore/zoneinfo"
+        sudo mkdir -p "$DST_DIR"
+        docker cp "$ORACLE_CONTAINER":"$SRC" /tmp/_server_tzfile.dat
+        sudo mv /tmp/_server_tzfile.dat "$DST_DIR/$(basename "$SRC")"
+        ls -l "$DST_DIR"
+        echo "ORA_TZFILE=$DST_DIR/$(basename "$SRC")" >> $GITHUB_ENV
     - name: Bundle install
       run: |
         bundle install --jobs 4 --retry 3

.github/workflows/truffleruby.yml

@@ -63,6 +63,17 @@ jobs:
     - name: Create database user
       run: |
         ./ci/setup_accounts.sh
+    - name: Force client TZ data to match server (ORA_TZFILE workaround)
+      run: |
+        ORACLE_CONTAINER=$(docker ps --filter "ancestor=gvenzl/oracle-free" -q)
+        SRC=$(docker exec "$ORACLE_CONTAINER" bash -c 'ls $ORACLE_HOME/oracore/zoneinfo/timezlrg_*.dat 2>/dev/null | head -1')
+        echo "Server TZ file: $SRC"
+        DST_DIR="$ORACLE_HOME/oracore/zoneinfo"
+        sudo mkdir -p "$DST_DIR"
+        docker cp "$ORACLE_CONTAINER":"$SRC" /tmp/_server_tzfile.dat
+        sudo mv /tmp/_server_tzfile.dat "$DST_DIR/$(basename "$SRC")"
+        ls -l "$DST_DIR"
+        echo "ORA_TZFILE=$DST_DIR/$(basename "$SRC")" >> $GITHUB_ENV
     - name: Bundle install
       run: |
         bundle install --jobs 4 --retry 3