bump gatsby-source-contentful

[omonk]

Description

Recent updates to contentful content type schema caused some issues within gatsby-source-contentful plugin relating to mismatch in typings.

Error looks like this:

  TypeError: entryItemFields[foreignReference.name].push is not a function

  - normalize.js:390 foreignReferences.forEach.foreignReference
    [yld.io]/[gatsby-source-contentful]/normalize.js:390:52

  - Array.forEach

  - normalize.js:365 entries.map.entryItem
    [yld.io]/[gatsby-source-contentful]/normalize.js:365:27

  - Array.map

  - normalize.js:296 locales.forEach.locale
    [yld.io]/[gatsby-source-contentful]/normalize.js:296:32

  - Array.forEach

  - normalize.js:271 Object.exports.createContentTypeNodes
    [yld.io]/[gatsby-source-contentful]/normalize.js:271:11

  - gatsby-node.js:169 contentTypeItems.forEach
    [yld.io]/[gatsby-source-contentful]/gatsby-node.js:169:15

  - Array.forEach

  - gatsby-node.js:168 Object.exports.sourceNodes
    [yld.io]/[gatsby-source-contentful]/gatsby-node.js:168:20

  - next_tick.js:68 process._tickCallback
    internal/process/next_tick.js:68:7

It has been discussed some time ago and reportedly fixed in an update here: gatsbyjs/gatsby#3064

This update has fixed the build from breaking but now gives us some warnings instead, I've reached out to gatsby team to ask for some advice on this: gatsbyjs/gatsby#3064 (comment)