go.mod, vendor: update (#3358)

* go.mod, vendor: remove unnecessary dependencies

Commands:
1. go mod tidy
2. go mod vendor

* go.mod, vendor: update cloud.google.com/go

Commands:
1. go get -u cloud.google.com/go
2. go mod tidy
3. go mod vendor

* go.mod, vendor: update cloud.google.com/*

Commands:
1. go get -u cloud.google.com/storage cloud.google.com/logging
2. go mod tidy
3. go mod vendor

* go.mod, .golangci.yml, vendor: update *lint*

Commands:
1. go get -u golang.org/x/tools github.com/golangci/golangci-lint@v1.47.0
2. go mod tidy
3. go mod vendor
4. edit .golangci.yml to suppress new errors (resolved in the same PR later)

* all: fix lint errors

hash.go: copy() recommended by gosimple
parse.go: ent is never nil
verifier.go: signal.Notify() with unbuffered channel is bad. Have no idea why.

* .golangci.yml: adjust godot rules

check-all is deprecated, but still work
if you're hesitating too - I'll remove this commit

1 files changed, 16 insertions, 3 deletions

diff --git a/vendor/github.com/spf13/afero/README.md b/vendor/github.com/spf13/afero/README.md
index c3e807aef..cab257f56 100644
--- a/vendor/github.com/spf13/afero/README.md
+++ b/vendor/github.com/spf13/afero/README.md
@@ -33,7 +33,7 @@ filesystem for full interoperability.
 * Support for compositional (union) file systems by combining multiple file systems acting as one
 * Specialized backends which modify existing filesystems (Read Only, Regexp filtered)
 * A set of utility functions ported from io, ioutil & hugo to be afero aware
-
+* Wrapper for go 1.16 filesystem abstraction `io/fs.FS`
 
 # Using Afero
 
@@ -79,11 +79,11 @@ would.
 
 So if my application before had:
 ```go
-os.Open('/tmp/foo')
+os.Open("/tmp/foo")
 ```
 We would replace it with:
 ```go
-AppFs.Open('/tmp/foo')
+AppFs.Open("/tmp/foo")
 ```
 
 `AppFs` being the variable we defined above.
@@ -94,6 +94,7 @@ AppFs.Open('/tmp/foo')
 File System Methods Available:
 ```go
 Chmod(name string, mode os.FileMode) : error
+Chown(name string, uid, gid int) : error
 Chtimes(name string, atime time.Time, mtime time.Time) : error
 Create(name string) : File, error
 Mkdir(name string, perm os.FileMode) : error
@@ -258,6 +259,18 @@ system using InMemoryFile.
 Afero has experimental support for secure file transfer protocol (sftp). Which can
 be used to perform file operations over a encrypted channel.
 
+### GCSFs
+
+Afero has experimental support for Google Cloud Storage (GCS). You can either set the
+`GOOGLE_APPLICATION_CREDENTIALS_JSON` env variable to your JSON credentials or use `opts` in
+`NewGcsFS` to configure access to your GCS bucket.
+
+Some known limitations of the existing implementation:
+* No Chmod support - The GCS ACL could probably be mapped to *nix style permissions but that would add another level of complexity and is ignored in this version.
+* No Chtimes support - Could be simulated with attributes (gcs a/m-times are set implicitly) but that's is left for another version.
+* Not thread safe - Also assumes all file operations are done through the same instance of the GcsFs. File operations between different GcsFs instances are not guaranteed to be consistent.
+
+
 ## Filtering Backends
 
 ### BasePathFs