Update dependencies (#506)

* update dependencies
* set cloudfunctionsv2 (cloud run functions) as default backend (closes
#504 )

Add github action job timeout (#498)

closes #497

Add make format command (#494)

`make format` (closes #492 )

Register nested handlers correctly (#484)

* Register nested handlers at the same time as the main handler to all
registration to work with the stages decorator. (closes #481)

The following will now register the scheduler and job at the same time
correctly.
```
@app.job("testjob2", schedule="* * * * *")
@app.stage(stages=["TEST"])
def test_cloudrun_job2(id):
    run_job()
```

GOBLET_BUILD_TAGS and GOBLET_ARTIFACT_BUCKET for cloudfunctionv1 (#477)

upload the code to GOBLET_UPLOAD_BUCKET tagged with first tag in
GOBLET_BUILD_TAGS
deploy cloudfunctionv1 from GOBLET_UPLOAD_BUCKET + GOBLET_ARTIFACT_TAG
(closes #447 )

Uptime check (#465)

closes #316 

```
@app.uptime(timeout="30s")
def uptime_cloudrun():
    return "success"
```

Update version 0.12.4 (#457)

Update version and blogs (#451)

Enum Route Param (#446)

closes #442 
```
class StopLight(Enum):
    green = 'green'
    yellow = 'yellow'
    red = 'red'


@app.route("/{color}")
def prim_enum(color: StopLight):
    return StopLight(color)
```

returns openapi spec as follows

```
      - in: path
        name: color
        required: true
        type: string
        enum:
        - green
        - yellow
        - red
 ```

bump version (#439)