Fix external int builder

Signed-off-by: Sara Damiano <sdamiano@stroudcenter.org>

Author: SRGDamia1

.github/workflows/build_examples.yaml

@@ -34,6 +34,6 @@ jobs:
 
       - name: Build PlatformIO examples
         env:
-          PLATFORMIO_BUILD_FLAGS: -D SDI12_EXTERNAL_PCINT -I/src
+          PLATFORMIO_BUILD_FLAGS: -D SDI12_EXTERNAL_PCINT
           PLATFORMIO_CI_SRC: examples/j_external_pcint_library
-        run: pio ci --board=mayfly --board=uno --board=megaatmega2560 --board=leonardo --board=zeroUSB --board=arduino_nano_esp32 --board=feather328p --board=feather32u4 --board=adafruit_feather_m0 --board=adafruit_feather_m4 --board=huzzah --board=featheresp32 --board=esp32-c3-devkitm-1 --board=esp32-s3-devkitm-1 --project-option="lib_deps=greygnome/EnableInterrupt@^1.1.0"
+        run: pio ci --board=mayfly --board=uno --board=megaatmega2560 --board=leonardo --board=zeroUSB --board=feather328p --board=feather32u4 --board=adafruit_feather_m0 --board=adafruit_feather_m4  --lib="." --project-option="lib_deps=greygnome/EnableInterrupt@^1.1.0"