Add idp_entity_id, public_key and sso_endpoint attributes to cloudflare_access_application.saas_app

[F21]

Closes #2812

[github-actions]

changelog detected ✅

[jacobbednarz]

acceptance tests all passing, thank you! 🥇

TF_ACC=1 go test ./internal/sdkv2provider -v -run "^TestAccCloudflareAccessApplication_" -count 1 -timeout 120m -parallel 1
=== RUN   TestAccCloudflareAccessApplication_BasicZone
--- PASS: TestAccCloudflareAccessApplication_BasicZone (9.72s)
=== RUN   TestAccCloudflareAccessApplication_BasicAccount
--- PASS: TestAccCloudflareAccessApplication_BasicAccount (9.37s)
=== RUN   TestAccCloudflareAccessApplication_WithCORS
--- PASS: TestAccCloudflareAccessApplication_WithCORS (9.61s)
=== RUN   TestAccCloudflareAccessApplication_WithSaas
--- PASS: TestAccCloudflareAccessApplication_WithSaas (9.76s)
=== RUN   TestAccCloudflareAccessApplication_WithAutoRedirectToIdentity
--- PASS: TestAccCloudflareAccessApplication_WithAutoRedirectToIdentity (11.23s)
=== RUN   TestAccCloudflareAccessApplication_WithEnableBindingCookie
--- PASS: TestAccCloudflareAccessApplication_WithEnableBindingCookie (9.52s)
=== RUN   TestAccCloudflareAccessApplication_WithCustomDenyFields
--- PASS: TestAccCloudflareAccessApplication_WithCustomDenyFields (9.37s)
=== RUN   TestAccCloudflareAccessApplication_WithADefinedIdps
--- PASS: TestAccCloudflareAccessApplication_WithADefinedIdps (10.93s)
=== RUN   TestAccCloudflareAccessApplication_WithMultipleIdpsReordered
--- PASS: TestAccCloudflareAccessApplication_WithMultipleIdpsReordered (22.04s)
=== RUN   TestAccCloudflareAccessApplication_WithHttpOnlyCookieAttribute
--- PASS: TestAccCloudflareAccessApplication_WithHttpOnlyCookieAttribute (10.39s)
=== RUN   TestAccCloudflareAccessApplication_WithHTTPOnlyCookieAttributeSetToFalse
--- PASS: TestAccCloudflareAccessApplication_WithHTTPOnlyCookieAttributeSetToFalse (8.81s)
=== RUN   TestAccCloudflareAccessApplication_WithSameSiteCookieAttribute
--- PASS: TestAccCloudflareAccessApplication_WithSameSiteCookieAttribute (9.22s)
=== RUN   TestAccCloudflareAccessApplication_WithLogoURL
--- PASS: TestAccCloudflareAccessApplication_WithLogoURL (14.14s)
=== RUN   TestAccCloudflareAccessApplication_WithSkipInterstitial
--- PASS: TestAccCloudflareAccessApplication_WithSkipInterstitial (9.19s)
=== RUN   TestAccCloudflareAccessApplication_WithAppLauncherVisible
--- PASS: TestAccCloudflareAccessApplication_WithAppLauncherVisible (12.82s)
=== RUN   TestAccCloudflareAccessApplication_WithSelfHostedDomains
--- PASS: TestAccCloudflareAccessApplication_WithSelfHostedDomains (9.32s)
PASS
ok  	github.com/cloudflare/terraform-provider-cloudflare/internal/sdkv2provider	176.417s

[github-actions]

This functionality has been released in v4.17.0 of the Terraform Cloudflare Provider.

Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!