Modify env language to extend bash (#5720)

Additionally, add `.envrc` to the `env`-supported file types.

languages.toml

@@ -2007,15 +2007,12 @@ source = { git = "https://github.com/hh9527/tree-sitter-wit", rev = "c917790ab9a
 [[language]]
 name = "env"
 scope = "source.env"
-file-types = [".env", ".env.local", ".env.development", ".env.production"]
+file-types = [".env", ".env.local", ".env.development", ".env.production", ".envrc"]
 injection-regex = "env"
 comment-token = "#"
 indent = { tab-width = 4, unit = "\t" }
 roots = []
-
-[[grammar]]
-name = "env"
-source = { git = "https://github.com/seshotake/tree-sitter-env", rev = "e6c6bb1e7b51d481cba463fe949f083cf22d81f7" }
+grammar = "bash"
 
 [[language]]
 name = "ini"

runtime/queries/env/highlights.scm

@@ -1,19 +1 @@
-(env_variable (quoted_string)) @string
-(env_variable (unquoted_string)) @string
-
-(env_key) @keyword
-
-((variable) @keyword
-  (#match? @keyword "^([A-Z][A-Z_0-9]*)$"))
-  
-[
-  "{"
-  "}"
-] @punctuation.bracket
-
-[
-  "$"
-  "=" 
-] @operator
-
-(comment) @comment
+; inherits: bash