chore(all): auto-regenerate gapics

This is an auto-generated regeneration of the gapic clients by
cloud.google.com/go/internal/gapicgen. Once the corresponding genproto PR is
submitted, genbot will update this PR with a newer dependency to the newer
version of genproto and assign reviewers to this PR.

If you have been assigned to review this PR, please:

- Ensure that the version of genproto in go.mod has been updated.
- Ensure that CI is passing. If it's failing, it requires your manual attention.
- Approve and submit this PR if you believe it's ready to ship.

Corresponding genproto PR: googleapis/go-genproto#639

Changes:

fix!(security/privateca): mark some bools as optional, correct response type of DeleteCaPool
  PiperOrigin-RevId: 385011540
  Source-Link: googleapis/googleapis@077f0c6

feat(resourcesettings):Publish Cloud ResourceSettings v1 API
  PiperOrigin-RevId: 384962120
  Source-Link: googleapis/googleapis@a9338c6

internal/generated/snippets/go.mod

@@ -32,5 +32,5 @@ require (
 	cloud.google.com/go/pubsublite v0.86.0
 	cloud.google.com/go/spanner v0.86.0
 	google.golang.org/api v0.50.0
-	google.golang.org/genproto v0.0.0-20210714021259-044028024a4f
+	google.golang.org/genproto v0.0.0-20210715145939-324b959e9c22
 )

internal/generated/snippets/go.sum

@@ -146,8 +146,9 @@ google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98
 google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/genproto v0.0.0-20210624195500-8bfb893ecb84/go.mod h1:SzzZ/N+nwJDaO1kznhnlzqS8ocJICar6hYhVyhi++24=
-google.golang.org/genproto v0.0.0-20210714021259-044028024a4f h1:UUQZ0BNnLgSI3v/uqq0hjdxwctexOPwnvKA5AA/Aze4=
 google.golang.org/genproto v0.0.0-20210714021259-044028024a4f/go.mod h1:AxrInvYm1dci+enl5hChSFPOmmUF1+uAa/UsgNRWd7k=
+google.golang.org/genproto v0.0.0-20210715145939-324b959e9c22 h1:jcklN/lATdu/CSsNEOLujIgfvY7IMQpRq6HNaPZuVIc=
+google.golang.org/genproto v0.0.0-20210715145939-324b959e9c22/go.mod h1:AxrInvYm1dci+enl5hChSFPOmmUF1+uAa/UsgNRWd7k=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=